It's the slightly newer version with 100 games on it. It can apparently be easily hacked to play roms from many different game consoles (Not that I support piracy, just something that I read online), and apparently it works with USB controllers like the Xbox 360 controller. It's not a bad deal for $20. Originally it was being sold for $80 with only 90 games two years ago. I picked one up just for the heck of it. $20 for 100 classic licensed arcade titles doesn't seem like a bad deal to me.