Mega SWIV (Europe) is a European release of the game SWIV, likely ported or adapted for the Sega Genesis console. Gameplay would probably involve the original SWIV's game mechanics and themes. The 'Mega' addition signifies the platform and potentially enhanced graphics or features for the Genesis.  The original developer and publisher of SWIV would be the official company behind the Genesis port.

Mega SWIV (Europe)

Mega Man: The Sequel Wars Episode Red Demo P1 (v1.01)