I was impressed with folks who learned so many games as kids -- I got sucked into Simcity 2000 for quite a spell... then Simcopter and "Streets of Simcity", which I soon found out had almost zero ppl looking to play online. It was kind of like GTA3, if in GTA3 your car could hop over other cars, glide with an airfoil, drop mines, and had a machine gun and/or rockets. Also no sex workers, though in Simcopter one developer did insert an easter egg involvinging a bunch of dudes showing up... I got yelled at in middle school for activating it in the school computer lab. (they also threatened to have me dragged downtown to the fbi for repeatedly playing the word 97 pinball egg -- being a "hacker" post columbine was not fun).

anyways i've been looking for offline, open source games so thanks for sharing.