You have one hour to explore and deactivate an alien object, a menacing intruder known as Omega. To your disposal are a selection of robots each with its own unique characteristics and each invaluable.Mission Omega is a multi-screen, icon driven, race against time.

Source:

Back of Cassette Case (Bug-Byte) - CPC/C64/Spectrum (UK)

MISSIONOMEGA

You have one hour to explore and detonate an alien object, a menacing intruder known as Omega. To assist you, you can call upon a selection of robots each with its own unique characteristics and each invaluable.
Mission Omega is a multi-screen, icon driven, race against time. Omega came out of space, it threatened the civilization of man-kind.
You must not fail.

Source:

Back of Cassette Case - CPC/C64/Spectrum (UK)