I feel like a new market surely is going to appear in the web games space. The low level pieces (webgl, game pad support) are good enough to make awesome games,

I feel like a new market surely is going to appear in the web games space. The low level pieces (webgl, game pad support) are good enough to make awesome games, but the main engines don’t jell with the web ecosystem. I think it is going to be a game like Celeste - high quality, developed with a mid level rendering library, game pad exclusive — that paves the way for a new batch of indie titles that better leverage the web to its potential. I see an awesome opportunity for a minamalist immediate mode rendering library in the vein of Kha/XNA/Mono Game to deliver blistering 2D performance on WebGL, that an ecosystem can form around and build upon. Libraries like Phaser and Pixi attempt to give Flash like functionality but don’t offer the Flash like API stability, so as an ecosystem foundation they kinda suck. A library that merely implements a subset of the 2D canvas API, but performant and easily portable, would serve as the best foundation IMO.