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1983
Rubik's Brain GameA game of logic & deduction for two.
Rubik's MateVariant of Siamese Cubes produced and sold during the original cube craze by Ideal.
SKFA promotional cube from Politechnika. Advertising for a swedish company.
TESCOA promotional cube from Politechnika. Advertising for the namegiving office.
Tajne RubikoveCudesne Kocka 15 Sistema Njenog Sredivanja 
TechnoimpexA promotional cube from Politechnika. Advertising for a hungarian foreign trade company.
Terimpex BudapestA promotional cube from Politechnika. Advertising for a hungarian state trading organization.
The Fast PyramidDramatic breakthrough in pyramid solution
The XFive parallel disks must be rotated correctly to make the egg stand upright. There is also a version named "Columbus' EGG".
The amazing cubeA cube produced as merchandising for the animated series of 1983.
TranselektroA promotional cube from Politechnika. Advertising for a hungarian foreign trade company.
TungsramA promotional cube from Politechnika.Advertising for an electronics company in Hungary. 
Twisted Octagonal Prism (Octagonal Edges E8000140003)A 3x3x3 truncated on 4 edges and afterwards extended. The result has an unknown shape.
Ultimate, Rubik's Wahn, Master RevengeInvented by Udo Krell. Produced in Hong Kong.
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Rubik's Revenge - The Group Theoretical Solution