QS Scramble - Quicksilva - Sinclair ZX81 Game Cassette untested

Sinclair ZX81 16k - QS Asteroids ZX-81 Games From Quicksilva Cassette Vintage

Zaraks Game Tape for ZX Spectrum or ZX-81 16K Retro

Sinclair ZX81 16k game - CATACOMBS by JK Greye Software, Gamestape 3 - 1981

ZX-81 vintage computer game, Quicksilva QS Asteroids (untested)

ZX81 Game GAMESTAPE # 3 1982 by ICT Software n.o.s. Untested

ZX81 Game 1k Wonders 1982 by ICT Software n.o.s. Untested

QS Asteroids - Quicksilva - Sinclair ZX81 Game Cassette Tested Working