I have two main games that I've created with it. I've also done a lot of test stuff, like a Gradius engine and whatnot. Hardly worth writing home about, compared to this:
CHRONO BEAT (Don't tell Square-Enix) http://www.megaupload.com/?d=O0BQ6OSW
Heeeyyy, what if Chrono Trigger was a Shmup? This shoot-em-up has three completed lengthy levels, plus lots of beta stuff I never really got around to. The three completed levels are 1000 AD (the first stage), 600 AD (technically third, coming after the beta "bonus stage"), and 2300 AD (by far the best level in the game, almost a genre change has you must avoid walls and hazards like opening doors and lasers.) You can use Enter and backspace to shift between stages, and the 1-7 keys at the top of your keyboard to shift through the available weapons (or you can, you know, pick them up as power-ups.) You start with Lucca's fireball gun by default, with marle's ice slasher (penetrating weapon with a low rate of fire) and frog's spreading bubble (imagine the ripple laser from Gradius) being the next most common. Slightly more rare is Crono's thunder beam (a "toothpaste laser", basically), Robo's seeking missile (which barely works half the time), Ayla's spinning warrior (Ayla launches... herself as a boomerang), and Magus's... ??? (the announcer just laughs in a really sinister way when you pick it up, but the attack mostly resembles the gravity bombs from Gradius. Also the best weapon in this game). Schala is a 1-up.
The other game I'll have to find again later, or make another exe of. it's not as big, but more completed.