Marlboro Go!, a prototype Atari Lynx game, was a promotional title sponsored by the Marlboro cigarette brand. The actual gameplay is largely unknown, never seeing an official release due to reasons likely related to anti-smoking campaigns or branding controversies. The limited details that exist suggest it may have been a simple arcade-style game.  It was never officially released to the public.

Marlboro Go! (Europe) (Proto)

Lynx Casino (USA, Europe)