CITY DEFENCE Defend the citizens of your planet against invading aliens in City Defence by Robert Eva of Truro in Cornwall. Wave upon wave of enemy craft must be destroyed before you get the chance to enter Hyperdrive and defeat the foe in space itself. City Defence uses substantial machine-code routines, and you must therefore take great care when entering the DATA statements at the beginning. Full instructions are included within the game which runs on any 48K Spectrum.