Free Flash games for your phone
This isn't news, but it is often overlooked: if you own one of the fancy new Android phones, Nokia or WinMo devices with web browsers that support flash content, you can play flash-based online games inside the browser. A while ago an XDA Dev forum member extracted loads of web-based flash-games and compiled neat little packages for our consumption. You can store the games on your phon'e memory card, and play them offline without incurring any data traffic.
Though they were promoted for the HTC HD2 at the time, I am able to play some of them on my HTC Desire HD, too.
So, give it a try: http://forum.xda-developers.com/showthread.php?t=668733