Surely an XBOX-1 and emulation would be the best solution? One unit, very compact. Emulators for almost every system (Amiga, Atari, SNES, Megadrive, Arcade, etc.) 720p output for movie playback etc?
Plus they are only about £5 second hand off ebay (perhaps another £15 for all the parts required to softmod & component cables)
You'd have to be pretty bonkers to want to pay the price of an FPGArcade unless you were intending to do FPGA development AND play around with games.