diff --git a/client/src/js/Game/Scoreboard.ts b/client/src/js/Game/Scoreboard.ts
index 72b5d9d..5a3332e 100644
--- a/client/src/js/Game/Scoreboard.ts
+++ b/client/src/js/Game/Scoreboard.ts
@@ -60,9 +60,13 @@ class Scoreboard {
 
   public initValues() : void {
     const { scoreboard, myHits, enemyHits } = this.els;
+    const { enemy, my } = this.hits;
 
     myHits.classList.add('hits', 'my-hits');
     enemyHits.classList.add('hits', 'enemy-hits');
+
+    this.myHits = my;
+    this.enemyHits = enemy;
     
     scoreboard.append(myHits, enemyHits);
   }
diff --git a/server/@types/index.d.ts b/server/@types/index.d.ts
new file mode 100644
index 0000000..6f39780
--- /dev/null
+++ b/server/@types/index.d.ts
@@ -0,0 +1,9 @@
+export interface CardJSON {
+ id: string;
+ order: number;
+ icon: string;
+}
+
+export interface CardAPI {
+  icon: string;
+}
diff --git a/server/app.js b/server/app.ts
similarity index 82%
rename from server/app.js
rename to server/app.ts
index 082c79b..e3e35d5 100644
--- a/server/app.js
+++ b/server/app.ts
@@ -1,14 +1,17 @@
-const Express = require('express')();
-const Http = require('http').Server(Express);
-const io = require('socket.io')(Http);
+import Express from 'express';
+import Http from 'http';
+import socket, { Packet } from 'socket.io';
 
-const cards = require('./src/data/cards');
-const Board = require('./src/Board');
+const app = new Http.Server(Express());
+const io = socket(app);
 
-const games = {};
+import cards from './src/data/cards';
+import Board from './src/Board';
+
+const games : Record<string, Board> = {};
 
 io.on('connection', socket => {
-  let userRoom;
+  let userRoom : string;
 
   socket.on('room', room => {
     const rooms = io.sockets.adapter.rooms;
@@ -60,7 +63,7 @@ io.on('connection', socket => {
         const winner = game.checkIfFinish();
         
         if(winner) {
-          io.in(room).clients((error, clients) => {
+          io.in(room).clients((error : Packet, clients : string[]) => {
             if(error) throw error;
       
             clients.map(socketId => io.sockets.sockets[socketId])
@@ -83,7 +86,7 @@ io.on('connection', socket => {
     io.sockets.in(userRoom).emit('enemy-left');
     delete games[userRoom];
   
-    io.in(userRoom).clients((error, clients) => {
+    io.in(userRoom).clients((error : Packet, clients : string[]) => {
       if(error) throw error;
 
       clients.forEach(socketId => io.sockets.sockets[socketId].leave(userRoom));
@@ -91,4 +94,4 @@ io.on('connection', socket => {
   }
 });
 
-Http.listen(process.env.PORT || 3000);
\ No newline at end of file
+app.listen(process.env.PORT || 3000);
diff --git a/server/package.json b/server/package.json
index c50b734..25438ea 100644
--- a/server/package.json
+++ b/server/package.json
@@ -4,7 +4,7 @@
   "main": "index.js",
   "license": "MIT",
   "scripts": {
-    "dev": "nodemon app.js",
+    "dev": "nodemon --watch '*.ts' --exec 'ts-node' app.ts",
     "start": "node app.js"
   },
   "dependencies": {
@@ -12,6 +12,11 @@
     "socket.io": "^2.3.0"
   },
   "devDependencies": {
-    "nodemon": "^2.0.4"
+    "@types/express": "^4.17.7",
+    "@types/node": "^14.0.26",
+    "@types/socket.io": "^2.1.10",
+    "nodemon": "^2.0.4",
+    "ts-node": "^8.10.2",
+    "typescript": "^3.9.7"
   }
 }
diff --git a/server/src/Board.js b/server/src/Board.ts
similarity index 60%
rename from server/src/Board.js
rename to server/src/Board.ts
index e9314e4..0b8fbc1 100644
--- a/server/src/Board.js
+++ b/server/src/Board.ts
@@ -1,5 +1,20 @@
+import { CardJSON, CardAPI } from "../@types";
+
+interface ScoreBoard extends Record<string, number>{
+  total : number;
+}
+
 class Board {
-  constructor (cards, players) {
+  private elapsedTime : number;
+  private cards : CardJSON[];
+  private players : string[];
+  private activesCards : CardJSON[];
+  private matches : CardJSON[];
+  public scoreboard : ScoreBoard;
+  public rematchRequests : number;
+  public playerOfTheTime : string;
+
+  constructor (cards : CardAPI[], players : string[]) {
     this.elapsedTime = 0;
     this.cards = this.shuffle([...cards, ...cards].map(card => ({ ...card })));
     this.players = players;
@@ -11,17 +26,20 @@ class Board {
     this.playerOfTheTime = players[Math.floor(Math.random() * 2)];
   }
 
-  shuffle (cards) {
-    return cards.map(card => {
+  private shuffle (cards : CardAPI[]) : CardJSON[] {
+    return cards.map(({ icon }) => {
       const randomNumber = Math.floor(Math.random() * cards.length);
-      card.order = randomNumber;
-      card.id = `_${Math.random().toString(36).substr(2, 9)}`;
-
+      const card : CardJSON = {
+        icon,
+        order: randomNumber,
+        id: `_${Math.random().toString(36).substr(2, 9)}`
+      };
+      
       return card;
     });
   }
 
-  click (id) {
+  public click (id : string) : CardJSON[] {
     const card = this.cards.find(card => card.id === id);
     
     if(!card || !this.checkIfCanFlip(id) || this.activesCards.length >= 2) return this.activesCards;
@@ -31,7 +49,7 @@ class Board {
     return this.activesCards;
   }
 
-  checkIfMatch () {
+  public checkIfMatch () : boolean {
     const [first, second] = this.activesCards;
     const isMatch = first.icon === second.icon;
 
@@ -41,14 +59,14 @@ class Board {
     return isMatch;
   }
 
-  checkIfCanFlip (id) {
+  public checkIfCanFlip (id : string) : boolean {
     const containInActives = this.activesCards.some(card => card.id === id);
     const containInMatches = this.matches.some(card => card.id === id);
 
     return !(containInActives || containInMatches)
   }
 
-  checkIfFinish () {
+  public checkIfFinish () : boolean | string {
     if(this.scoreboard.total === this.cards.length / 2) {
       return this.players.reduce((winner, client) => this.scoreboard[client] > this.scoreboard[winner] ? client : winner);
     }
@@ -56,15 +74,15 @@ class Board {
     return false;
   }
 
-  incrementHits () {
+  public incrementHits () : void {
     const score = this.scoreboard[this.playerOfTheTime]
     this.scoreboard[this.playerOfTheTime] = (score || 0) + 1;
     this.scoreboard.total++;
   }
 
-  togglePlayer () {
-    this.playerOfTheTime = this.players.find(player => player !== this.playerOfTheTime);
+  public togglePlayer () : void {
+    this.playerOfTheTime = this.players.find(player => player !== this.playerOfTheTime) || '';
   }
 }
 
-module.exports = Board;
\ No newline at end of file
+export default Board;
diff --git a/server/src/Card.js b/server/src/Card.js
deleted file mode 100644
index e69de29..0000000
diff --git a/server/src/data/cards.js b/server/src/data/cards.ts
similarity index 93%
rename from server/src/data/cards.js
rename to server/src/data/cards.ts
index 91c5960..47963b0 100644
--- a/server/src/data/cards.js
+++ b/server/src/data/cards.ts
@@ -1,6 +1,6 @@
 // Simulate a API request
 
-module.exports = [
+export default [
   { icon: 'fas spider' },
   { icon: 'fas otter' },
   { icon: 'fas hippo' },
@@ -12,4 +12,4 @@ module.exports = [
   { icon: 'fas dove' },
   { icon: 'fas cat' },
   { icon: 'fas crow' },
-]
\ No newline at end of file
+];
diff --git a/server/tsconfig.json b/server/tsconfig.json
new file mode 100644
index 0000000..c1df235
--- /dev/null
+++ b/server/tsconfig.json
@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+
+    "strict": true,                           /* Enable all strict type-checking options. */
+
+    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+
+    "skipLibCheck": true,                     /* Skip type checking of declaration files. */
+    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */
+  }
+}
diff --git a/server/yarn.lock b/server/yarn.lock
index a997b9f..3f06c0a 100644
--- a/server/yarn.lock
+++ b/server/yarn.lock
@@ -14,11 +14,88 @@
   dependencies:
     defer-to-connect "^1.0.1"
 
+"@types/body-parser@*":
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/@types/body-parser/-/body-parser-1.19.0.tgz#0685b3c47eb3006ffed117cdd55164b61f80538f"
+  integrity sha512-W98JrE0j2K78swW4ukqMleo8R7h/pFETjM2DQ90MF6XK2i4LO4W3gQ71Lt4w3bfm2EvVSyWHplECvB5sK22yFQ==
+  dependencies:
+    "@types/connect" "*"
+    "@types/node" "*"
+
 "@types/color-name@^1.1.1":
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
   integrity sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==
 
+"@types/connect@*":
+  version "3.4.33"
+  resolved "https://registry.yarnpkg.com/@types/connect/-/connect-3.4.33.tgz#31610c901eca573b8713c3330abc6e6b9f588546"
+  integrity sha512-2+FrkXY4zllzTNfJth7jOqEHC+enpLeGslEhpnTAkg21GkRrWV4SsAtqchtT4YS9/nODBU2/ZfsBY2X4J/dX7A==
+  dependencies:
+    "@types/node" "*"
+
+"@types/engine.io@*":
+  version "3.1.4"
+  resolved "https://registry.yarnpkg.com/@types/engine.io/-/engine.io-3.1.4.tgz#3d9472711d179daa7c95c051e50ad411e18a9bdc"
+  integrity sha512-98rXVukLD6/ozrQ2O80NAlWDGA4INg+tqsEReWJldqyi2fulC9V7Use/n28SWgROXKm6003ycWV4gZHoF8GA6w==
+  dependencies:
+    "@types/node" "*"
+
+"@types/express-serve-static-core@*":
+  version "4.17.9"
+  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.9.tgz#2d7b34dcfd25ec663c25c85d76608f8b249667f1"
+  integrity sha512-DG0BYg6yO+ePW+XoDENYz8zhNGC3jDDEpComMYn7WJc4mY1Us8Rw9ax2YhJXxpyk2SF47PQAoQ0YyVT1a0bEkA==
+  dependencies:
+    "@types/node" "*"
+    "@types/qs" "*"
+    "@types/range-parser" "*"
+
+"@types/express@^4.17.7":
+  version "4.17.7"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.7.tgz#42045be6475636d9801369cd4418ef65cdb0dd59"
+  integrity sha512-dCOT5lcmV/uC2J9k0rPafATeeyz+99xTt54ReX11/LObZgfzJqZNcW27zGhYyX+9iSEGXGt5qLPwRSvBZcLvtQ==
+  dependencies:
+    "@types/body-parser" "*"
+    "@types/express-serve-static-core" "*"
+    "@types/qs" "*"
+    "@types/serve-static" "*"
+
+"@types/mime@*":
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.3.tgz#c893b73721db73699943bfc3653b1deb7faa4a3a"
+  integrity sha512-Jus9s4CDbqwocc5pOAnh8ShfrnMcPHuJYzVcSUU7lrh8Ni5HuIqX3oilL86p3dlTrk0LzHRCgA/GQ7uNCw6l2Q==
+
+"@types/node@*", "@types/node@^14.0.26":
+  version "14.0.26"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.0.26.tgz#22a3b8a46510da8944b67bfc27df02c34a35331c"
+  integrity sha512-W+fpe5s91FBGE0pEa0lnqGLL4USgpLgs4nokw16SrBBco/gQxuua7KnArSEOd5iaMqbbSHV10vUDkJYJJqpXKA==
+
+"@types/qs@*":
+  version "6.9.4"
+  resolved "https://registry.yarnpkg.com/@types/qs/-/qs-6.9.4.tgz#a59e851c1ba16c0513ea123830dd639a0a15cb6a"
+  integrity sha512-+wYo+L6ZF6BMoEjtf8zB2esQsqdV6WsjRK/GP9WOgLPrq87PbNWgIxS76dS5uvl/QXtHGakZmwTznIfcPXcKlQ==
+
+"@types/range-parser@*":
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.3.tgz#7ee330ba7caafb98090bece86a5ee44115904c2c"
+  integrity sha512-ewFXqrQHlFsgc09MK5jP5iR7vumV/BYayNC6PgJO2LPe8vrnNFyjQjSppfEngITi0qvfKtzFvgKymGheFM9UOA==
+
+"@types/serve-static@*":
+  version "1.13.4"
+  resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.4.tgz#6662a93583e5a6cabca1b23592eb91e12fa80e7c"
+  integrity sha512-jTDt0o/YbpNwZbQmE/+2e+lfjJEJJR0I3OFaKQKPWkASkCoW3i6fsUnqudSMcNAfbtmADGu8f4MV4q+GqULmug==
+  dependencies:
+    "@types/express-serve-static-core" "*"
+    "@types/mime" "*"
+
+"@types/socket.io@^2.1.10":
+  version "2.1.10"
+  resolved "https://registry.yarnpkg.com/@types/socket.io/-/socket.io-2.1.10.tgz#cb00583313cc40a65d5201e897d7b8c95cfd8c73"
+  integrity sha512-1fQMaDU/x2LPljEI/QI5IKl8sBYHM/zv32YYKvNrVEor7/1+MLqMqmWt8Bb8Vpf+PlIPBiTTC0BnrRx7ju3xOw==
+  dependencies:
+    "@types/engine.io" "*"
+    "@types/node" "*"
+
 abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
@@ -70,6 +147,11 @@ anymatch@~3.1.1:
     normalize-path "^3.0.0"
     picomatch "^2.0.4"
 
+arg@^4.1.0:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
+  integrity sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==
+
 array-flatten@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-1.1.1.tgz#9a5f699051b1e7073328f2a008968b64ea2955d2"
@@ -167,6 +249,11 @@ braces@~3.0.2:
   dependencies:
     fill-range "^7.0.1"
 
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
 bytes@3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
@@ -371,6 +458,11 @@ destroy@~1.0.4:
   resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
   integrity sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=
 
+diff@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
+
 dot-prop@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-5.2.0.tgz#c34ecc29556dc45f1f4c22697b6f4904e0cc4fcb"
@@ -802,6 +894,11 @@ make-dir@^3.0.0:
   dependencies:
     semver "^6.0.0"
 
+make-error@^1.1.1:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.6.tgz#2eb2e37ea9b67c4891f684a1394799af484cf7a2"
+  integrity sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==
+
 media-typer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
@@ -1179,6 +1276,19 @@ socket.io@^2.3.0:
     socket.io-client "2.3.0"
     socket.io-parser "~3.4.0"
 
+source-map-support@^0.5.17:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map@^0.6.0:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
 "statuses@>= 1.5.0 < 2", statuses@~1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
@@ -1269,6 +1379,17 @@ touch@^3.1.0:
   dependencies:
     nopt "~1.0.10"
 
+ts-node@^8.10.2:
+  version "8.10.2"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.10.2.tgz#eee03764633b1234ddd37f8db9ec10b75ec7fb8d"
+  integrity sha512-ISJJGgkIpDdBhWVu3jufsWpK3Rzo7bdiIXJjQc0ynKxVOVcg2oIrf2H2cejminGrptVc6q6/uynAHNCuWGbpVA==
+  dependencies:
+    arg "^4.1.0"
+    diff "^4.0.1"
+    make-error "^1.1.1"
+    source-map-support "^0.5.17"
+    yn "3.1.1"
+
 type-fest@^0.8.1:
   version "0.8.1"
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
@@ -1289,6 +1410,11 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
+typescript@^3.9.7:
+  version "3.9.7"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
+  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+
 undefsafe@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.3.tgz#6b166e7094ad46313b2202da7ecc2cd7cc6e7aae"
@@ -1392,3 +1518,8 @@ yeast@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"
   integrity sha1-AI4G2AlDIMNy28L47XagymyKxBk=
+
+yn@3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"
+  integrity sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==