The ZX Spectrum was a popular computer released by Sinclair Research in 1982.

Games released on ZX Spectrum:
1987
The first commercial adventure game. Travel through an enchanted world in a search for 13 treasures.
A spy infiltrates buildings to gather secret information while avoiding enemy agents.
Travel from your London flat to a tropical island in search of pirates' gold.
Teleport to distant worlds to collect items, so you can fix your spaceship and return home.
Enter a castle and remove the curse that has been placed on Count Cristo by his enemies.

1985
As a secret agent, you must race against time to complete your mission before a nuclear power plant explodes.