To understand why some people (including myself) are going nuts about Pico-8, here's one random feature: when you save your virtual cartridge as 'mygame.p8.png' it automatically generates a neat cartridge png representation with the screenshot of your choice from the game. Like so: <a href="http://www.lexaloffle.com/bbs/cposts/1/10022.p8.png" rel="nofollow">http://www.lexaloffle.com/bbs/cposts/1/10022.p8.png</a>.<p>Big deal you say! well, check this out: this png IS the game. It embeds the executable written in LUA. Try it for yourself - take the png I posted above, load it in pico8 then press escape: voila, full source code, sprite sheet, tracker data, etc. Type "RUN" and the game plays.<p>Pico8 (and its cousin voxatron) also contain an online cartridge browser that lets you discover and learn from everyone who contributed a cartridge.<p>Pico-8 is choke-full of these incredible little details that make all the difference. Unfortunately it's not open source itself, which some find a bit odd considering it encourages the open sourcing of the cartridge written for it. Good to see some projects such as TIC-80, LIKO-12 and now PX8 mixing things up a bit, that said it's still a nascent environment and let's not forget it's very much the arbitrary, sometimes amusing limitations imposed by the lead dev that makes these things fun.