+let server = http.createServer(app);
+
+/*
+ * CRON tasks
+ */
+
+let cron = require('node-cron');
+const UserModel = require("../models/User");
+const GameModel = require("../models/Game");
+cron.schedule('0 0 0 * * *', function() {
+ // Remove unlogged users and unstarted games every 24h
+ UserModel.cleanUsersDb();
+ GameModel.cleanGamesDb();
+});