MAME 0.185 Database (no adult/casino/gun games)
Here's a MAME database I painstakingly put together. Its based on MAME 0.185, includes all games and CHD based games with the following rules applied.
No adult games
No Gun games
No Mahjong or casino games
No duplicates (as close as I could get - kept newest version possible)
No non-US games (unless it does not have a US clone)
What you're left with is a set of around 2600 unique, playable games by joystick, spinner or trackball.