diff --git a/app.js b/app.js
index 6fa7cdd..af39593 100644
--- a/app.js
+++ b/app.js
@@ -21,10 +21,10 @@ let settings = yaml.safeLoad(fsx.readFileSync('default-config.yaml'));
 if (fsx.existsSync('config.yaml'))
   Object.assign(settings, yaml.safeLoad(fsx.readFileSync('config.yaml')));
 
-let graphqlResolver = (request) => {
+let graphqlResolver = (request, response) => {
   return {
       time: Date.now(),
-      bingo:  bingoRouter.graphqlResolver(request)
+      bingo:  bingoRouter.graphqlResolver(request, response)
   }
 };
 let app = express();
@@ -58,10 +58,10 @@ app.use('/', indexRouter);
 app.use('/users', usersRouter);
 app.use(/\/riddle(\/.*)?/, riddleRouter);
 app.use('/bingo', bingoRouter);
-app.use('/graphql', graphqlHTTP(request => {
+app.use('/graphql', graphqlHTTP((request, response) => {
   return {
     schema: buildSchema(importSchema('./graphql/schema.graphql')),
-    rootValue: graphqlResolver(request),
+    rootValue: graphqlResolver(request, response),
     context: {session: request.session},
     graphiql: true
   };
diff --git a/graphql/bingo.graphql b/graphql/bingo.graphql
index 82db62c..43e0d79 100644
--- a/graphql/bingo.graphql
+++ b/graphql/bingo.graphql
@@ -11,6 +11,9 @@ type BingoMutation {
 
     # set the username of the current session
     setUsername(input: UsernameInput): BingoUser
+
+    # recreates the active game to a follow-up
+    createFollowupGame: BingoGame
 }
 
 type BingoQuery {
@@ -74,6 +77,9 @@ type BingoGame {
 
     # if the game has already finished
     finished: Boolean
+
+    # the id of the followup game if it has been created
+    followup: ID
 }
 
 type BingoUser {
diff --git a/public/javascripts/bingo-web.js b/public/javascripts/bingo-web.js
index c9ee9f6..882af3a 100644
--- a/public/javascripts/bingo-web.js
+++ b/public/javascripts/bingo-web.js
@@ -10,45 +10,63 @@ function getGameParam() {
         return '';
 }
 
-/**
- * Toggles the visiblity of the player.container
- */
-function togglePlayerContainer() {
-    let playerContainer = document.querySelector('#players-container');
-    if (playerContainer.getAttribute('class') === 'hidden')
-        playerContainer.setAttribute('class', '');
-    else
-        playerContainer.setAttribute('class', 'hidden');
-}
-
 /**
  * Submits the bingo words to create a game
  * @returns {Promise<void>}
  */
 async function submitBingoWords() {
     let textContent = document.querySelector('#bingo-textarea').value;
-    let words = textContent.replace(/[<>]/g, '').split('\n');
-    let size = document.querySelector('#bingo-grid-size').value;
+    let words = textContent.replace(/[<>]/g, '').split('\n').filter((el) => {
+        return (!!el && el.length > 0) // remove empty strings and non-types from word array
+    });
+    if (words.length === 0) {
+        showError('You need to provide at least one word!');
+    } else {
+        let size = document.querySelector('#bingo-grid-size').value;
+
+        let response = await postGraphqlQuery(`
+        mutation($words:[String!]!, $size:Int!) {
+          bingo {
+            createGame(input: {
+              words: $words,
+              size: $size
+            }) {
+              id
+            }
+          }
+        }`, {
+            words: words,
+            size: Number(size)
+        }, `/graphql?game=${getGameParam()}`);
+        if (response.status === 200) {
+            let gameid = response.data.bingo.createGame.id;
+            insertParam('game', gameid);
+        } else {
+            showError(`Failed to create game. HTTP Error: ${response.status}`);
+            console.error(response)
+        }
+    }
+}
 
+/**
+ * Gets the followup bingoSession and redirects to it
+ * @returns {Promise<void>}
+ */
+async function createFollowup() {
     let response = await postGraphqlQuery(`
-    mutation($words:[String!]!, $size:Int!) {
+    mutation {
       bingo {
-        createGame(input: {
-          words: $words,
-          size: $size
-        }) {
+        createFollowupGame {
           id
         }
       }
-    }`, {
-        words: words,
-        size: Number(size)
-    }, `/graphql?game=${getGameParam()}`);
-    if (response.status === 200) {
-        let gameid = response.data.bingo.createGame.id;
+    }`,null,`/graphql?game=${getGameParam()}`);
+    if (response.status === 200 && response.data.bingo.createFollowupGame) {
+        let gameid = response.data.bingo.createFollowupGame.id;
         insertParam('game', gameid);
     } else {
-        console.error(response)
+        showError(`Failed to create follow up game. HTTP Error: ${response.status}`);
+        console.error(response);
     }
 }
 
@@ -76,6 +94,7 @@ async function submitUsername() {
         document.querySelector('#username-form').remove();
         document.querySelector('.greyover').remove();
     } else {
+        showError(`Failed to submit username. HTTP Error: ${response.status}`);
         console.error(response);
     }
 }
@@ -116,6 +135,7 @@ async function submitWord(word) {
             document.querySelector('#bingo-button').setAttribute('class', 'hidden');
         }
     } else {
+        showError(`Failed to submit word. HTTP Error: ${response.status}`);
         console.error(response);
     }
 }
@@ -146,6 +166,7 @@ async function submitBingo() {
             clearInterval(refrInterval)
         }
     } else {
+        showError(`Failed to submit Bingo. HTTP Error: ${response.status}`);
         console.error(response);
     }
 }
@@ -196,6 +217,7 @@ async function refresh() {
         if (response.status === 400)
             clearInterval(refrInterval);
         console.error(response);
+        showError('No session found. Are cookies allowed?');
     }
 }
 
@@ -206,19 +228,38 @@ async function refresh() {
 function displayWinner(name) {
     let winnerDiv = document.createElement('div');
     let greyoverDiv = document.createElement('div');
-    let winnerSpan = document.createElement('span');
     winnerDiv.setAttribute('class', 'popup');
-    winnerDiv.setAttribute('style', 'cursor: pointer');
+    winnerDiv.innerHTML = `
+        <h1>${name} has won!</h1>
+        <button id="btn-again" onclick="createFollowup()">Again!</button>
+        <button id="btn-leave" onclick="window.location.reload()">Leave</button>
+    `;
     greyoverDiv.setAttribute('class', 'greyover');
-    winnerSpan.innerText = `${name} has won!`;
-    winnerDiv.appendChild(winnerSpan);
-    winnerDiv.onclick = () => {
-        window.location.reload();
-    };
+    //winnerDiv.onclick = () => {
+    //    window.location.reload();
+    //};
     document.body.append(greyoverDiv);
     document.body.appendChild(winnerDiv);
 }
 
+/**
+ * Shows an error Message.
+ * @param errorMessage
+ */
+function showError(errorMessage) {
+    let errorDiv = document.createElement('div');
+    errorDiv.setAttribute('class', 'errorDiv');
+    errorDiv.innerHTML = `<span>${errorMessage}</span>`;
+    let contCont = document.querySelector('#content-container');
+    if (contCont)
+        contCont.appendChild(errorDiv);
+    else
+        alert(errorMessage);
+    setTimeout(() => {
+        errorDiv.remove();
+    }, 10000);
+}
+
 /**
  * Executes the provided function if the key-event is an ENTER-key
  * @param event {Event} - the generated key event
@@ -229,6 +270,11 @@ function submitOnEnter(event, func) {
         func();
 }
 
+window.addEventListener("unhandledrejection", function(promiseRejectionEvent) {
+    promiseRejectionEvent.promise.catch(err => console.log(err));
+    showError('Connection problems... Is the server down?');
+});
+
 window.onload = () => {
     if (window && !document.querySelector('#bingoform')) {
         refrInterval = setInterval(refresh, 1000);      // global variable to clear
@@ -237,5 +283,6 @@ window.onload = () => {
     document.querySelector('#bingo-grid-y').innerText = gridSizeElem.value;
     gridSizeElem.oninput = () => {
         document.querySelector('#bingo-grid-y').innerText = gridSizeElem.value;
+        document.querySelector('#word-count').innerText = `Please provide at least ${gridSizeElem.value**2} phrases:`;
     };
 };
diff --git a/public/stylesheets/sass/bingo/style.sass b/public/stylesheets/sass/bingo/style.sass
index 7c745f6..d79b6c2 100644
--- a/public/stylesheets/sass/bingo/style.sass
+++ b/public/stylesheets/sass/bingo/style.sass
@@ -1,15 +1,16 @@
 @import ../mixins
 @import ../vars
 
-button
-  margin: 1rem
-
 textarea
   @include default-element
   display: block
   margin: 1rem
   border-radius: 0
   font-size: 0.8em
+  background-color: lighten($primary, 15%)
+
+#word-count
+  margin: 1rem
 
 @media(max-device-width: 641px)
   textarea
@@ -18,14 +19,20 @@ textarea
   #words-container
     width: 100%
     height: 80%
-  #content-container #row-1 #players-container div
-    display: none
-    padding: 0
+  #content-container
+    grid-template-columns: 0 100% !important
+    grid-template-rows: 10% 80% 10% !important
+    #players-container div
+      display: none
+      padding: 0
   #username-form
     width: calc(100% - 2rem) !important
     left: 0 !important
   #hide-player-container-button
     display: none
+  .popup
+    width: calc(100% - 2rem) !important
+    left: 0 !important
 
 @media(min-device-width: 641px)
   textarea
@@ -70,11 +77,13 @@ textarea
       border-collapse: collapse
       text-align: center
       vertical-align: middle
+      user-select: none
 
       span
         vertical-align: middle
         display: inline-block
         word-break: break-word
+        user-select: none
 
     .bingo-word-panel:hover
       background-color: darken($primary, 2%)
@@ -116,35 +125,83 @@ textarea
   vertical-align: middle
 
 #content-container
-  display: table
+  display: grid
+  grid-template-columns: 20% 80%
+  grid-template-rows: 10% 80% 10%
   height: 100%
   width: 100%
 
-  #row-1
-    display: table-row
-    height: 85%
+  #button-container
+    grid-column-start: 1
+    grid-column-end: 1
+    grid-row-start: 1
+    grid-row-end: 1
+    display: grid
+    margin: 1rem
+    font-size: inherit
+
+    button
+      font-size: inherit
+      padding: 0
+
+  #players-container
+    padding: 0 0.5rem
+    transition-duration: 1s
+    grid-column-start: 1
+    grid-column-end: 1
+    grid-row-start: 2
+    grid-row-end: 2
+
+    h1
+      margin: 0 0 1rem 0
 
-    #players-container
+  #words-container
+    grid-column-start: 2
+    grid-column-end: 2
+    grid-row-start: 2
+    grid-row-end: 2
+
+  .errorDiv
+    grid-column-start: 2
+    grid-column-end: 2
+    grid-row-start: 3
+    grid-row-end: 3
+    background-color: $error
+    text-align: center
+    margin: 0.75rem 0
+    border-radius: 1rem
+    height: calc(100% - 1.5rem)
+    display: table
+    span
       display: table-cell
-      padding: 0.5rem
-      transition-duration: 1s
+      font-size: 1.8rem
+      vertical-align: middle
 
-      .player-container
-        @include default-element
-        padding: 0.5rem
-        max-width: 14rem
+.player-container
+  @include default-element
+  padding: 0.5rem
+  margin: 0 0 1rem 0
+  max-width: 14rem
+  border-radius: 0
+  color: $primarySurface
+  border: 1px solid $inactive
 
 .popup
   @include default-element
-  height: 5%
-  width: 40%
-  top: 47.5%
+  position: fixed
+  display: grid
+  height: calc(50% - 1rem)
+  width: calc(40% - 1rem)
+  top: 25%
   left: 30%
   text-align: center
-  transition-duration: 1s
-  span
-    margin: 2%
-    display: block
+  vertical-align: middle
+  padding: 1rem
+  z-index: 1000
+
+  button
+    margin: 1rem
+    font-size: 2rem
 
 .greyover
   width: 100%
@@ -153,4 +210,4 @@ textarea
   z-index: 99
   top: 0
   left: 0
-  background-color: transparentize($primary, 0.5)
+  background-color: rgba(0,0,0,0.5)
diff --git a/public/stylesheets/sass/classes.sass b/public/stylesheets/sass/classes.sass
index 4dffa00..2b4d91a 100644
--- a/public/stylesheets/sass/classes.sass
+++ b/public/stylesheets/sass/classes.sass
@@ -11,3 +11,9 @@
   position: fixed
   top: 20%
   left: 30%
+
+.grid
+  display: grid
+
+.inline-grid
+  display: inline-grid
diff --git a/public/stylesheets/sass/style.sass b/public/stylesheets/sass/style.sass
index 8b14e00..066a693 100644
--- a/public/stylesheets/sass/style.sass
+++ b/public/stylesheets/sass/style.sass
@@ -36,16 +36,20 @@ button
   font-size: 1.2rem
   padding: 0.7rem
   transition-duration: 0.2s
+  background-color: $secondary
 
 button:hover
-  background-color: darken($primary, 2%)
+  background-color: darken($secondary, 2%)
   cursor: pointer
 
 button:active
-  background-color: lighten($primary, 15%)
+  background-color: lighten($secondary, 15%)
 
 input
   @include default-element
   font-size: 1.2rem
-  background-color: lighten($primary, 10%)
+  background-color: lighten($primary, 15%)
   padding: 0.7rem
+
+textarea
+  background-color: lighten($primary, 15%)
diff --git a/public/stylesheets/sass/vars.sass b/public/stylesheets/sass/vars.sass
index 9f8b9b2..365b26d 100644
--- a/public/stylesheets/sass/vars.sass
+++ b/public/stylesheets/sass/vars.sass
@@ -1,4 +1,6 @@
 $primary: #223
 $primarySurface: white
-
-$borderRadius: 20px
\ No newline at end of file
+$secondary: teal
+$borderRadius: 20px
+$inactive: #aaa
+$error: #a00
diff --git a/routes/bingo.js b/routes/bingo.js
index 4b394ac..ec1cb0a 100644
--- a/routes/bingo.js
+++ b/routes/bingo.js
@@ -20,6 +20,7 @@ class BingoSession {
         this.users = {};
         this.bingos = [];   // array with the users that already had bingo
         this.finished = false;
+        this.followup = null;
     }
 
     /**
@@ -43,6 +44,17 @@ class BingoSession {
         else
             return Object.values(this.users);
     }
+
+    /**
+     * Creates a followup BingoSession
+     * @returns {BingoSession}
+     */
+    createFollowup() {
+        let followup = new BingoSession(this.words, this.gridSize);
+        this.followup = followup.id;
+        bingoSessions[followup.id] = followup;
+        return followup;
+    }
 }
 
 class BingoUser {
@@ -109,7 +121,7 @@ function shuffleArray(array) {
  */
 function inflateArray(array, minSize) {
     let resultArray = array;
-    let iterations = Math.ceil(minSize/array.length);
+    let iterations = Math.ceil(minSize/array.length)-1;
     for (let i = 0; i < iterations; i++)
         resultArray = [...resultArray, ...resultArray];
     return resultArray
@@ -248,7 +260,7 @@ router.get('/', (req, res) => {
     }
 });
 
-router.graphqlResolver = (req) => {
+router.graphqlResolver = (req, res) => {
     let bingoUser = req.session.bingoUser || new BingoUser();
     let gameId = req.query.game || bingoUser.game || null;
     let bingoSession = bingoSessions[gameId];
@@ -268,17 +280,23 @@ router.graphqlResolver = (req) => {
         },
         // mutation
         createGame: ({input}) => {
-            let words = input.words;
+            let words = input.words.filter((el) => { // remove empty strings and non-types from word array
+                return (!!el && el.length > 0)
+            });
             let size = input.size;
-            let game = new BingoSession(words, size);
-
-            bingoSessions[game.id] = game;
+            if (words.length > 0 && size < 10 && size > 0) {
+                let game = new BingoSession(words, size);
 
-            setTimeout(() => { // delete the game after one day
-                delete bingoSessions[game.id];
-            }, 86400000);
+                bingoSessions[game.id] = game;
 
-            return game;
+                setTimeout(() => { // delete the game after one day
+                    delete bingoSessions[game.id];
+                }, 86400000);
+                return game;
+            } else {
+                res.status(400);
+                return null;
+            }
         },
         submitBingo: () => {
             if (checkBingo(bingoUser.grids[gameId])) {
@@ -296,20 +314,35 @@ router.graphqlResolver = (req) => {
         toggleWord: ({input}) => {
             if (input.word || input.base64Word) {
                 input.base64Word = input.base64Word || Buffer.from(input.word).toString('base-64');
-                if (bingoUser.grids[gameId])
+                if (bingoUser.grids[gameId]) {
                     toggleHeared(input.base64Word, bingoUser.grids[gameId]);
-                return bingoUser.grids[gameId];
+                    return bingoUser.grids[gameId];
+                } else {
+                    res.status(400);
+                }
+            } else {
+                res.status(400);
             }
         },
         setUsername: ({input}) => {
             if (input.username) {
-                bingoUser.username = input.username;
+                bingoUser.username = input.username.substring(0, 30); // only allow 30 characters
 
                 if (bingoSession)
                     bingoSession.addUser(bingoUser);
 
                 return bingoUser;
             }
+        },
+        createFollowupGame: () => {
+            if (bingoSession) {
+                if (!bingoSession.followup)
+                    return bingoSession.createFollowup();
+                else
+                    return bingoSessions[bingoSession.followup];
+            } else {
+                res.status(400);
+            }
         }
     };
 };
diff --git a/views/bingo/bingo-game.pug b/views/bingo/bingo-game.pug
index a0d3bdf..0cffc18 100644
--- a/views/bingo/bingo-game.pug
+++ b/views/bingo/bingo-game.pug
@@ -5,19 +5,19 @@ block content
         div(class='greyover')
         div(id='username-form', onkeypress='submitOnEnter(event, submitUsername)')
             input(type='text', id='username-input', placeholder=username)
+            span Maximum is 30 characters.
             button(onclick='submitUsername()') Set Username
     div(id='content-container')
-        button(id='hide-player-container-button', onclick='togglePlayerContainer()') Toggle Player View
-        div(id='row-1')
-            div(id='players-container')
-                each player in players
-                    div(class='player-container', b-pid=`${player.id}`)
-                        span(class='player-name-span')= player.username
-            div(id='words-container')
-                each val in grid
-                    div(class='bingo-word-row')
-                        each field in val
-                            div(class='bingo-word-panel', onclick=`submitWord('${field.base64Word}')`, b-word=field.base64Word, b-sub=`${field.submitted}`)
-                                span= field.word
+        div(id='players-container')
+            h1 Players
+            each player in players
+                div(class='player-container', b-pid=`${player.id}`)
+                    span(class='player-name-span')= player.username
+        div(id='words-container')
+            each val in grid
+                div(class='bingo-word-row')
+                    each field in val
+                        div(class='bingo-word-panel', onclick=`submitWord('${field.base64Word}')`, b-word=field.base64Word, b-sub=`${field.submitted}`)
+                            span= field.word
         div(id='button-container')
             button(id='bingo-button' onclick='submitBingo()', class='hidden') Bingo!
diff --git a/views/bingo/bingo-layout.pug b/views/bingo/bingo-layout.pug
index b3191e6..9549b96 100644
--- a/views/bingo/bingo-layout.pug
+++ b/views/bingo/bingo-layout.pug
@@ -1,6 +1,7 @@
 html
     head
         include ../includes/head
+        title Bingo by Trivernis
         script(type='text/javascript', src='/javascripts/bingo-web.js')
         link(rel='stylesheet', href='/sass/bingo/style.sass')
     body
diff --git a/views/bingo/bingo-submit.pug b/views/bingo/bingo-submit.pug
index 2a5228d..e351819 100644
--- a/views/bingo/bingo-submit.pug
+++ b/views/bingo/bingo-submit.pug
@@ -4,9 +4,10 @@ block content
     div(id='bingoform')
         div(id='bingoheader')
             div
-                input(type='number', id='bingo-grid-size', class='number-input', value=3, min=1, max=8, onkeypress='submitOnEnter(event, submitBingoWords)')
+                input(type='number', id='bingo-grid-size', class='number-input', value=3, min=1, max=7, onkeypress='submitOnEnter(event, submitBingoWords)')
                 span x
                 span(id='bingo-grid-y', class='number-input') 3
             div(class='stretchDiv')
                 button(onclick='submitBingoWords()') Submit
+        span(id='word-count') Please provide at least 9 phrases:
         textarea(id='bingo-textarea', placeholder='Bingo Words')
diff --git a/views/index.pug b/views/index.pug
index 3d63b9a..8b93234 100644
--- a/views/index.pug
+++ b/views/index.pug
@@ -3,3 +3,4 @@ extends layout
 block content
   h1= title
   p Welcome to #{title}
+  button(onclick='window.location.href="/bingo"') Bingo
diff --git a/views/layout.pug b/views/layout.pug
index 15af079..6f767bf 100644
--- a/views/layout.pug
+++ b/views/layout.pug
@@ -2,6 +2,6 @@ doctype html
 html
   head
     title= title
-    link(rel='stylesheet', href='/stylesheets/style.css')
+    link(rel='stylesheet', href='/sass/style.sass')
   body
     block content