Contra / Gryzor - All versions gameplay HD

Gameplay of all versions of Contra / Gryzor / Probotector (Konami 1987): (0:00) Arcade (1:39) Amstrad CPC (4:32) ZX Spectrum (6:17) MS-DOS (8:33) Commodore 64 (10:19) NES (13:22) MSX 2 Which one did you play? Which one is your favourite?