Bakugan © Spin Master.
Bakugan Duel is a PvP multiplayer game that lets players battle their Bakugans. The game has three phases; in the first phase, the players roll their Bakugan Balls on the Cores. The Cores give the player a buff or a debuff. The second phase of the game lets the player farm energy, which can be used to play Boost Cards to boost the Bakugan’s B-Power, Attack or Defence. In the third phase, the Bakugan with the higher B-Power attacks.
Bakugan Duel is a cross-platform HTML5 game built using WebGL libraries, namely Phaser and Three.js with the JavaScript programming language.
The asynchronous multiplayer was backed by a Golang service that held player state and resolved duels between sessions.