You can get games by importing them from any of the services found in the ACP / DBTech - vBArcade / Import Games or from this site whih has quite a few, ibpArcade Downloads - Arcade
There is literally tens of thousands available so "Want all games available" is quite a daunting task, at one point I had over 31000 in mine, but that's alot to deal with and most did not get played.