3 things currently; some fun toys..

Web based two player bingo race game in an attempt to drag significant other away from mobile phone. :p

Optimised gravity sim, everyone loves a good gravity sim. Event driven physics and aiming for 10000 spheres at 60fps.

Alife simulation where critters can read and write symbols into/from their environment to see if we can't get some kind of rudimentary communication evolved.

Nothing super serious, but fun gadgets to tinker with :)