This game is worth checking out. Under a snazzy spy-motif lies a pretty intelligent puzzler. You can complete the game in well under an hour, but the shifting game mechanic makes this one of my favorite Kongregate games.
For the uninitiated, Kongregate is a reliable (read: virus-free) Flash game portal. Its interface is easy to use, and the games do not require you to sign up. For those who do sign up (it’s free), you’ll be able to level up through a clever point system. Gain points by earning achievements in designated games, by rating games, or by creating brand-new games.
I’m currently working on a few games to submit to Kongregate; hopefully I’ll finish them in a timely manner.