Out of curiosity, what's everyone's go-to Vita games when they're bored? I'm not necessarily talking about your favourite titles (though they could be), but ones you consistently pick up to play to kill some time and know you'll enjoy them.
For me, it's Project Diva f. The very nature of rhythm games means they're highly replayable, but it's one of the few that I've been so hooked on. I never really was into Vocaloid prior to this game, but I've acquired a taste for the unique vocals of the songs now. Really looking forward to F 2nd even though I know I'll have to import it.
Second would be Dynasty Warriors Next for the similar reasons. Nothing like sadistically mowing down mindless mobs of enemies in some short missions. It's also got surprisingly good visuals when compared to the console iterations. Though, I'm not sure if that's a knock against the consoles or praise for the Vita.