When it comes to games, Apple’s App Store isn’t just a flea market where independent and small-scale developers can earn a few bucks peddling momentary amusements for 99 cents a pop. Giant game makers like EA, Capcom and Ubisoft sometimes set up shop, and when they do, they’re not afraid to charge top dollar, as App Store games go. They’ll usually take one of their hit console or PC titles — “Assassin’s Creed,” “Madden,” “The Sims,” “Resident Evil” — and strip it down to the key elements.