Has the distinction of being thought up, coded, tested, fixed, distributed, competed, and rejected by game companies all within four days.
The easy version can be found at http://www.brianroney.com/gridgame/GridGame.html
The hard version is at http://www.brianroney.com/~broney/hardgrid/GridGame.html
Now available through the iPhone App store: http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=290155690&mt=8 (opens iTunes)
Also now available as an app on Facebook: http://apps.facebook.com/masterpiecegame/
Click on the square where you want the top left of the "current piece" to go. If it fits, it places. If not, it doesn't. When a row or a column is filled, that row or column is cleared. The goal is to keep enough clear space around that pieces can continue to be placed.
Top scores (scores are for the web version, and are not transferable to iphone or facebook due to minor board/scoring changes)-
9130 JoseluisEspinosa 8880 ChrisErickson 8190 FrancesHocutt 7050 MorganConbere 6520 MeganThorsen 6110 LucasBaker 5470 CubeSchnaider 5210 ClayHambrick 5050 ChainMaille (One move short of a double clear, too) 4910 NateCappallo 4210 VivaHorowitz 3700 EvilSouthie (I suck at my own game! Woo!) 90 ChainMaille (Getting lower would be...tough) 80 FrancesHocutt (but possible) 50 MikeBuchanan (quite possible)
46260 EvilSouthie's dad (yay for addicting people!) 42470 MikeBuchanan 28400 JoseluisEspinosa 22180 EvilSouthie 18540 CubeSchnaider