
Shooter / Platform / Puzzle / Action / Science fiction
This unofficial, fan-made, demake of Valve's Portal makes it possible to play the classic on original Nintendo 64 hardware!

Captain Toad Treasure Tracker is a ROM hack/mod of Super Mario World which adapts the mechanics of the homonymous official game for the Wii U to a 2D platformer.

Super Mario Logic is a ROM hack/mod of Super Mario World, which transforms the game in a puzzle/platform game. The player has to use the game mechanics to proceed to the next screen. Kamek has cast a magical spell on the Mushroom Kingdom, turning it into a strange new land. Join Mario on a brand new adventure as he conquers each task an order to break the spell and return the land back to normal.

Platform / Puzzle / Sport / Action
Have you ever wanted to play through Sonic 2 without being able to run and jump? Do you want to watch helplessly as our hedgehog friend rolls backwards down the same slope for the fifth time in a row? Do you want to experience the fear and frustration of Chemical Plant Zone Act 2's rising water section as though you were playing it for the very first time? Well, my friend, look no further than SNOLF: The Sonic Golf Experience! This romhack replaces Sonic's ability to move with a golf-game mechanic, similar to the kind of thing found in games like Kirby's Dream Course. Sonic remains rolled up into a ball under most conditions, and can only be launched when he has come to a stop. The Rings counter instead counts how many shots you have taken, allowing players to compete to get the lowest score!

This hack adds 40 Odyssey-style Hint Art Stars to the original Super Mario 64.

Platform / Puzzle / Arcade / Action
Donkey Kong is a Game Boy game which starts out with the premise of being a straight remake of the original Donkey Kong arcade game. Although at first it appears to be just a port, the familiar levels from the arcade game are just a prelude to the real platform jumping adventure. There are 97 levels spread out over 9 worlds. These levels are much more complex than the originals, featuring scrolling backgrounds, numerous objects to collect, and enemies to avoid. Along the way, you will encounter several boss style battles with Donkey Kong, as well. When played on a Super Game Boy, the game is colorized, digitized speech is added and the ending music takes advantage of the SNES sound chip.

Shooter / Platform / Puzzle / Action / Fantasy
Humorous action-platformer that does away with the tedious item collection found in most games in the genre. Instead, BFD employs a combination of standard jump, run and explore mechanics and context-sensitive gags and actions. For instance, in the beginning of the game, by pressing the B button on the first pad he encounters, Conker drinks some Alka-Seltzer to wipe out his hangover, at which point players can proceed forward. Later on these pads are used to activate a slingshot and throwing knives; to turn Conker into an anvil and drop downward; to shoot automatic, double-handed guns; to activate a The Matrix-inspired slow-motion effect and flip through the air shooting enemies; and much, much more.

Platform / Puzzle / Adventure / Action / Fantasy
Who would have thought that a man would be so foolish or so daring as to accept a challenge set down by the Gods? And yet one came forward to claim the right to test his skills and strengths against a city so legendary its name alone struck fear in the hearts of all who heard it spoken.