http://www.wired.com/gadgetlab/2010/09/your-froyo-tablet-probably-wont-support-the-android-market/
Looks like the market won't support some tablets...luckily, it isn't an ipad so you can hack away! Not sure which tablet you have, but here's a link so you can see the modifications out there for your tablet. Good luck and have fun!
http://forum.xda-developers.com/filter.php?cat=Tablet
Here's a link for some "cracked" games.
http://www.symbiantalk.net/forumdisplay.php?50-Android-OS-Games