Heaps: A free, open-source and cross-platform game engine
I've written a couple side project games in Heaps and I'm a big fan.If you're familiar with Pixi.js, Heaps and it's language, Haxe, will feel very similar. Haxe is a pretty cool language, it's similar to TypeScript but compiles to native binaries for almost all major game consoles.Heaps was apparently the framework behind Dead Cells if that says anything about the level of polish you can accomplish with this set of tools.