As the year grinds to a close, the last big release of the year — the PS3-exclusive Gran Turismo 6 — is finally burning up the track. The gearheads’ wet dream lets you buy, race and wreck just about anything on four wheels you’ve ever lusted after. Even though it’s a light week for new stuff, there’s plenty else to keep you busy. The whimsical stick-figure adventure game Doki-Doki Universe is out on all current Sony systems, and Nintendo has rolled out an oddball curiosity for the 3DS that lets you pretend you are checking out one of the world’s greatest museums. Nintendo 3DS Guide: Louver is the only way you can scope out the Mona Lisa while copping a squat.