So many of these flash games feel unrewarding, don't they? You plough through them and all you get is the chance to do it all again with each new level. Console games are usually more generous, particularly on the Xbox 360. Each game contains 'achievements'which give you points for different tasks or secrets found. I genuinely think they're a great idea and would be very happy for them to spill over into other aspects of life (Achievement Unlocked - 12th cup of tea today!) but for now, I would just be happy to see them in online flash games.
Turns out I'm in luck. Here's a game dedicated simply to the unbridled joy of unlocking achievements, 100 of them to be precise. It's called... Achievement Unlocked! Gotta catch 'em all.