Colossus 4 Bridge (1986)(CDS Microsystems)[a2]
Colossus 4 Bridge – Tutor (1986)(CDS Microsystems)
Colossus 4 Bridge (1986)(CDS Microsystems)
Colossus 4 Chess (1986)(CDS Microsystems)
Colossus 4 Chess (1986)(CDS Microsystems)[a2]
Colossus 4 Chess (1986)(CDS Microsystems)[a]