No, as Thunderwaffe said its a standalone game which mimics gameplay from the duel arena minigame
Your idea is quite nice aswell
The resolution is so small cause its a pic from a pic from a photoshop doodle
Its 1080p in its full glory.
And yea that application has a very good design. Simple, basic but neat and good structured.
My app could learn from that, I find it very hard to be a coder and on the other side design my code into something understandable.