It seems a couple of people I have demonstrated my WIP WebGL-based 7drl have had trouble running later versions of it, so I decided to ask you guys to see if it works for you. The game is played inside a web browser and requires WebGL support (but not any plugins), so you need a rather new browser (e.g. Google Chrome 10 or recent beta of Firefox 4 – IE won’t work). Also, your graphics card needs to be at least OpenGL 2 capable (with decent drivers) for WebGL to work.
EDIT: Check out WebGL Wiki for browser support help & notes.