The coyote time (time you can jump after falling) is a nice touch!
This is a work in progress. The current build is a prototype of core 2.5D movement and HTML5 compatibility.
All you can do in this build is walk and jump in a static room. There's some HUD garbage at the bottom of the screen leftover from Gunmetal Arcadia, which this project is partially derived from. It doesn't mean anything.