Krool Toys regularly develops new games for Nintendo's 25-year-old handheld.

McDonald’s isn’t the only company to pull off a retro-gaming-themed PR gambit today. Atari is also releasing a new game for the Atari 2600, an announcement that also served to drum up interest in its upcoming title Mr. Run and Jump. If Halliburton announces a new Sega Master System game about fracking in the next 24 hours, I’ll know someone is messing with me.