That's the kind of thing you have to look for CABs for. See if you like AGEye G-Invaders here:
http://www.ageye.de/download/GInvaders.cab
Download, put on your device, and click on it to install using file explorer... no one is going to put all the games you want on a ROM because everyone else will think it's clutter.
EDIT: Doh I think you meant just to find games, not to include them in the ROM. lol