The Best Way to Find Games is to Browse and Find Forum Arcades that Dedicate to Play Games; some of them Offer Links to Download their Games. (just by searching the words ibproarcade games on any browser you get hundreds of useful links but the process is as I mention in the next phrase)
Is Up to You to Browse the Web, Find the Ones (Forums/Arcades) that Share their Games, Register in their Communities, Play Their Games (Test Them), Download them with the Link they Provide, and Install them (Upload Files to tar folder and Install them via ACP > ibProArcade Install Games Menu).
All I Can Tell You is that ibProArcade is FANTASTIC to Install Arcade Games (file names are "game_XYX" and are compressed as Winzip but most of them identified as ".tar"), and almost ALL of them (99.9%) Install without any Complication, specially in the Last Version of ibProArcade.
MrZeropage is a Great Coder and this Mod is Very Well Developped. :up::up::up:
My Best Regards.