It took me a minute, but I finally made Gravity Storm work in the browser. If you didn't know, Gravity Storm is an 2D action platformer with shooting and gravity mechanics. Originally, it had a browser version that you could play on Itch.io, but after the addition of features like a pause menu or screen-shake., the browser version was no longer functional. However, after a lot of work, I finally fixed the bugs, and it is fully playable. There might be other bugs, if you spot any, please let me know, I'll try to fix it as soon as possible. 

Gravity Storm First Mission still gets updates, mainly bug fixes and graphical improvement, it's a short, free, but polished game. It supports Gamepad, keyboard and mouse, and three languages: English, Spanish and Portuguese. Moreover, A sequel is already in development, if you wish, you can support it by buying First Mission.