56. Atari’s Greatest Hits

For the perfect mix of primeval addictiveness, pleasingly eight-bit graphics and difficulty that goes rapidly from easy to hair-tearing, this package is unbeatable. You can also play head to head with another iPhone or iPad owner using Bluetooth, competing for Asteroid or Centipede high-score bragging rights.

The clincher: Missile Command. Delaying nuclear annihilation for a few futile minutes has never been so much fun.

Price: APP Free, games 69p each or 100 games For £9