Have your eye on a specific game? Not many 3D games in the tablet android market place.
Example of an Android Tegra 2 game: Riptide GP Proves What Tegra 2, And Android, Are Capable of Doing
Realistically, you can pretty much forget about any 3D gaming on the current crop of Win7 tablets.ViewSonic ViewPad 10 Review
A multi-touch screen needs multi-touch apps, games and programs too.
Win 7 does have some touch screen support built in, but it's limited.