If you're a fan of both free games (who isn't?) and endless-running titles, you'll be happy to read that Imangi Studios is currently giving Temple Run away for free.
This particular runner, which earned an extremely respectable 4/5 at review, sees you using simple swipe and tilt controls to navigate temple walls and sheer cliffs, as you attempt to outrun your persistent persuers.
Your endless journey will see you jumping over obstacles, sliding under hazards, and collecting enough coins to grab some fancy power-ups.
The achievement lovers among you have definitely been catered for: 22 unlockable Game Center trophies, with daily, weekly, and all-time leaderboards also included for extra competiton.
Temple Run may be an endless runner, but this isn't an endless sale, so we suggest that you sprint over to the App Store right this second.