A collection of my Memotech tapes 14 in all; been in my possession since new - I no longer have an MTX so cannot guarantee they will load but they have been dry stored and appear in good condition. 

You can see what they are from the pics but here's a list anyway:

Jumping Jack Flash - Syntax Software
Karate King              - Megastar
The Caves of Orb     - Syntax Software
Dr Franky                  - Syntax Software
Combat                     -  Syntax Software
Ghostly Castle          -   Syntax Software
Superbike                 - Syntax Software
Highway Encounter  - Syntax Software/Vortex Software?
Miner Dick                 - Xaviersine
Reveal                       -  Memotech Owners Club
Two sided (Mice & TNT) - Memotech Owners Club
Two sided (Quasi & Hanoi) - Memotech Owners Club
MTX Data File                    - Adoptview Ltd
Demonstration Tape         - Memotech

Any questions please ask :-)