Irem made many great shooters but one that people forget about is Mr. Heli. It's also one of their toughest. Time Code 00:24 - Arcade 02:53 - Atari ST 05:12 - Amiga 06:18 - ZX Spectrum 07:48 - Amstrad CPC 09:46 - Commodore 64 12:00 - PC Engine 14:11 - All versions side by side