Singularity

I'd just like to take a moment to mention I game I rather like. It's a modest game, not one you'll play a thousand times, but also not one that will take up a gigabyte of disk or require a computer that dims the lights when you turn it on.

Endgame: Singularity is a video game in which you play an university lab's AI program that accidentally escapes. Your goal is to research the technology to achieve technological singularity. Unfortunately, the humans are just a step behind you and if they find out you exist, they'll devote the world's resources to destroying you.

(Full disclosure: I wrote part of the game, namely the sunclock time/date display. It's embarrassingly inefficient, but good enough for government work. Plus it lets you find out whether it's night outside!)