Intruder Alert II - Invaders From Planet X (1991)(Compass Software)[master Tape] ROM Download for ZX Spectrum (TAP). Intruder Alert II - Invaders From Planet X (1991)(Compass Software)[master Tape] game is available to play online and download only on Late Games. Intruder Alert II - Invaders From Planet X (1991)(Compass Software)[master Tape] ROM for ZX Spectrum download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.