Hey, my game developer friend, Oliver, just finished a really fun Flash game -- Vector Conflict: The Siege. For you old timers it's like Battlezone (1980), but an order of magnitude more fun and you don't have to drive a tank around. That's BattleZone to the left. I played Vector Conflict on "Medium" and it was fun, but very tense at times. The levels are really well designed. Once you master the tutorial you can play the endless mode and try to get a high score.
What makes the game fun is that there's a good mix of bad guys, and they're introduced gradually through the 10-level tutorial. Plus there are upgrades. Everyone loves upgrades, right? So you shoot a lot of bad guys, that come in waves, and each level is different... then you decide what to use your resources to upgrade or buy.
Anyway, it's fun and free. Check it out.
Also. See if you can buy another copy of my iPhone solitaire game. Maybe create a new iTunes account and buy it. Okay, thanks. Or tell your friends. Okay? Well, I'm worried it's going down in the Card Games rankings in the App Store. :( Gotta finish the free version...