Mr. Nutz is a side scrolling, 2D platformer video game published by Ocean Software. It was first released for the Super Nintendo Entertainment System in 1993[citation needed], then later released for the Mega Drive and Game Boy in 1994[citation needed], then Sega Channel in 1995, followed by Game Boy Color in 1999, and Game Boy Advance remake in 2001.

The player controls the one player character, Mr. Nutz an Anthropomorphic red squirrel wearing shoes, gloves and a cap through six themed levels. The end goal is to stop Mr. Blizzard, a yeti, who is the final boss and is trying to take over the world by using his magic powers to turn it into a mass of ice. The game shares similarities with other platformers of the same time, being that jumping is the main technique used in the game to navigate both fixed and moving platforms and defeat or avoid most enemies. Ammunition, in the form of nuts, can be collected and thrown at enemies.

Ocean released in 1994 another game on the Amiga under the name Mr. Nutz: Hoppin' Mad. Developed by Neon Studios, it featured the same titular character but with different, faster and more wide-open gameplay, unrelated levels and enemies, another story, and a large overworld map instead of a linear path to follow in a mini-map. This game was also going to be released for the Sega Mega Drive in 1995 as Mr Nutz 2, but it got shelved. A playable build exist, leaked in the form of source code and compiled upon.