From the game's instructions: The player controls an "Arachnus 4", an armoured fighting-machine that moves on four legs.

The player must first select a sector to play in via a map screen and then control the Arachnus as it wanders an isometric (top-down in the Commodore 64 version) view of the cityscape attacking marauding insects and searching for the insect queen using a scanner.

It can only launch one at a time so if a bomb misses its intended target the player will have to wait until it hits the scenery or bounces against the fence of the play area before firing again.

The game was favourably reviewed by Crash magazine who said it was graphically impressive, well designed and fun to play.

[2] Zzap!64 were less impressed by the Commodore 64 version which was criticised for dull gameplay and programming bugs.