Gauntlet is a clone of Defender written by Chris Terran published in the UK by Micro Power.

[1] Described as "a very competent implementation of one of the most popular arcade games",[2] it was initially released for the Acorn Electron, and later made available for the BBC Micro,[3] with an Amstrad CPC version arriving in 1985.

[4] The player controls an X15 spacecraft, protecting canisters from the hostile Reeg forces.

The player must shoot the enemy ship to release a grabbed canister, but if it falls too far, then it's destroyed on impact.

If the player allows destruction of all canisters, then a hoard of mutants attack and the landscape completely disappears.