This is a fan-made game, not an official release. It likely involves a "Portal Gun" from the Portal game series incorporated into the Sonic the Hedgehog 2 game for the Sega Genesis. Gameplay would mix aspects of Sonic's platforming with the Portal Gun's unique abilities. The developers are unknown individual(s) or fan community.
Download the ROM for Portal Gun in Sonic 2 or enjoy playing Portal Gun in Sonic 2 online here.
Download the ROM for Portal Gun in Sonic 2 or enjoy playing Portal Gun in Sonic 2 online here.
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