Kirby in Sonic the Hedgehog 22015

Knuckles' Emerald Hunt is a modification of Sonic the Hedgehog 2 that split off from another hack Sonic 2 Adventure Edition. It's main goal is to mimic the Emerald Hunting Gameplay from Sonic Adventure 2/Battle. Playable characters being Knuckles and Tikal, through each stage you must find and collect 3 Emeralds or Emerald pieces. The Game features the radar from SA2, and a secret Sandwich mode in which all the emeralds are replaced with Sub sandwiches and the Master emerald is replaced with a Subway footlong. It also features the Scrapped Hidden Palace Zone and some Sonic 1 Zones

Big's Fishing Derby is a total-conversion modification of Sonic the Hedgehog 2, based on Big's Fishing mini game in Sonic Adventure, the same premise applies. Big must catch froggy to obtain the emerald he swallowed, Dr. Robotnik also is fishing for froggy to obtain all the Chaos emeralds! Big must protect froggy and keep the emeralds out of Robotnik's hands!

Portal Gun in Sonic 2 is a Modification of Sonic the Hedgehog 2 that does just that add the portal gun from the portal series into Sonic the Hedgehog 2. Sonic's Sprites have been tweaked, and the Portal Gun is fully functional the portals warping you to their adjacent portal. The portals can also interact with Enemies and Bosses.

Sally Acorn in Sonic the Hedgehog 2 (aka Sally in Sonic 2) is a fan-made ROM of the game Sonic the Hedgehog 2 for the Sega Mega Drive, with Princess Sally Acorn as a playable character in place of Sonic the Hedgehog.

Sally Acorn in Sonic the Hedgehog (aka Sally in Sonic 1) is a fan-made ROM of the game Sonic the Hedgehog for the Sega Mega Drive, with Princess Sally Acorn as a playable character in place of Sonic the Hedgehog.

Based off the unlicensed port of Sonic the Hedgehog for the NES/Famicom by Hummer Team, Somari the Adventurer replaces Sonic with 3 unique new moves. Mushroom Kingdom Zone is a newly added 1-Act level as the first zone.

A ROM hack for Sonic 3 & Knuckles which swaps Sonic for Sally Acorn (from the Sonic the Hedgehog comics), with her own moveset.

One evening, Kirby had a strange dream. He had a dream of a long, long stairway leading up to a door. As soon as the door opened, he was confronted with a world he had never seen before, spreading out as far as his eyes could see. When he strained his ears to listen, he heard a faint voice saying “Welcome to the land of dreams. We have been cursed by Nightmare, he stole the Dream Rod and cast a completely evil spell. We have been awaiting your arrival. Please defeat Nightmare and return the land of dreams to its natural state. Nightmare has placed Meta Knight under his control (kono ko kono ko sa kudo kai kona misu saku ni kona misu ka ku.), to guard the Dream Rod, be wary Kirby!” Kirby must now gain the Dream Rod and break the curse! When Kirby entered the world, he lost his ability to copy. However, the Dream Rod, with its last bit of power give Kirby the ability to use Dream Halos.