in sonix mania there are new levels and new bos battles and really good animation

Terraria is a 2D Sandbox game Heavily Focused on Bosses, Although There is Still Lots of Weapons, Tools, and Such. And Even if You Finish the Game, There is Loads of Mods! Very Great Game, 9.5/10

Stick Fight: The Game is 2D Multplayer Online and Couch Fighting Game, Where you Battle as Stick Figures with a Variety of Weapons, from Laser-Guided Sniper Rifles, to Black Hole Generators. 8.5/10