The four ROM chips you see here house the (apparently) copyrighted games that came preinstalled in the Studio II.

Aside from the five games contained within the system, RCA released an additional nine game cartridges to bring the total count to a staggering 14 games.

Compare this to the 900+ games made for the Atari 2600 (and its awesome joysticks), and it's not hard to see why the Studio II was such a staggering failure.