Big Chungus: Robot Wars!

Big Chungus: Robot Wars! is the first game to be rated AO for excessive violence, and as such it can get much more blood and gore in. The game centers around Big Chungus and all of his friends and enemies finding mecha suits, and having to fight it out in these suits, but soon having to team up to defeat a greater foe. Big Chungus and his friends and foes each have their own unique robot suits. Big Chungus has a mecha suit shown in the boxart. Shaggy has a mecha suit based on A.R.T from the Scooby Doo! TV show. Matt from Wii Sports has a WuHu Island Warrior themed Mecha Suit. Ugandan Chungus has a mecha suit themed after Ugandan Metal Sonic. Shadow Chungus, the final boss, has a darker themed Big Chungus mecha. Olmer Food's Mecha Suit is themed after the Robot Rabbit from the Looney Tunes. Roblox Girl has a Mecha Suit themed after the female Robot from Roblox, specifically a Halloween Costume model. Moto Moto has a Mecha Suit themed after LEM-R from the Madagascar series, this character is also called Lemmy. Thicc Chungus has a mecha suit based on a random THICC robot. Thanos has a mecha suit themed after the LEGO Thanos Mech.

Trivia
This game is the first game in the series to include co-op mode, in which near the final boss you can choose to play with 2 or more players to defeat Shadow Chungus.

The reason it was initially rated AO is for drug references and sexual comments about Thicc Chungus' Mecha Suit.

This is the first game to not include a soundtrack, making use of sound effects instead.