TTYD64 is a PM64 romhack that adds TTYD's gameplay into the original Paper Mario plus all new items, badges, and recipes from that game, and a lot of new areas to explore plus other additions.
The Indigo mod for Ocarina of Time is an ambitious romhack that creates a new adventure focused on an alternate Hyrule in which you play as adult Link from the start.
Super Mario 64: Rocky Mountain Revisted is a 7-star mini-hack that reimagines the old version of Whomp's Fortress from its Spaceworld 95' demo, also known as Rocky Mountain.
The fourth update to Smash Remix adds Goemon from the Mystical Ninja/Goemon franchise to the roster, along with new stages and features.
Two new playable characters from the Star Fox series were added: Slippy Toad and Peppy Hare.
The third update to Smash Remix adds Marina from Mischief Makers to the roster, along with King Dedede from the Kirby series. There are also new stages and new features.
The first post-beta update for Smash Remix added Sonic the Hedgehog (and Classic Sonic) as a new playable character, new stages (including some based on the Sonic the Hedgehog franchise, among others) and new features and modes like the Home Run Contest.
A romhack for The Legend of Zelda: Ocarina of Time with a new challenge awaiting in the land of Hyrule. Nothing is as it seems. Items are placed in different locations and the whole world feels much darker. Can you overcome all the new dangers?
A mod for Mario Kart 64 which swaps all the racers besides Mario for Link, Zero Suit Samus, Crash Bandicoot, Sonic the Hedgehog, Banjo, Waluigi, and Skull Kid.