Put a game on the homepage

[suchipi]

Instead of the business-style scroller "why should you use this" homepage, it would be cool if there was a game built in hex-engine on the homepage, and the game itself somehow communicated the "why should you use this" information.

• Would need to not load until the user clicked "play" or etc, so that people who are loading the site just to get to the docs don't have to wait for the game scripts to downloader
• It'd be ideal if the inspector was present so that we can show that off. We'll probably need to tweak hex-engine-scripts so that there's a way to make a release build with the inspector included (and with function names not mangled, so you can tell what's what in the inspector)
• The game should be playable without a keyboard or gamepad (for mobile users).