The pack includes two additional playable characters, Zuko and ' Eastman & Laird' Raphael, along with additional crew characters and vehicle parts.

Players can also purchase the 'Turbo Pack' downloadable content separately or packaged with the 'Turbo Edition' of the game. The game was originally announced to be released on October 7, 2022, but was later delayed one week to October 14. Unlike previous Nickelodeon Kart Racers games, Slime Speedway features full English voice acting for all of the game's characters, excluding JoJo Siwa. A trailer for the game was released on September 12, 2022. Nickelodeon Kart Racers 3: Slime Speedway was initially leaked by Best Buy on July 8, 2022, before being formally announced later that day.

Toph Beifong ( Avatar: The Last Airbender).Squidward Tentacles ( SpongeBob SquarePants).SpongeBob SquarePants ( SpongeBob SquarePants).Raphael ( Teenage Mutant Ninja Turtles).

Prince Zuko ( Avatar: The Last Airbender).Powdered Toast Man ( The Ren & Stimpy Show).Michelangelo ( Teenage Mutant Ninja Turtles).Leonardo ( Teenage Mutant Ninja Turtles).Kamper SpongeBob ( Kamp Koral: SpongeBob's Under Years).Kamper Patrick ( Kamp Koral: SpongeBob's Under Years).JoJo Siwa ( The JoJo and BowBow Show Show).Jenny Wakeman ( My Life as a Teenage Robot).Eastman and Laird Raphael ( Teenage Mutant Ninja Turtles).Donatello ( Teenage Mutant Ninja Turtles).April O'Neil ( Teenage Mutant Ninja Turtles).Slime Speedway supports both four-player local split-screen multiplayer and online multiplayer for up to 12 players. New racers, pit crew and vehicle parts can be unlocked by winning cups in Slime Scramble, completing challenges, or purchasing them with slime tokens at the in-game garage. The game features 36 race tracks, 16 of which return from the previous game. In addition to karts, characters can now ride bikes as well. While each kart body was tied to a specific character in the previous games, Slime Speedway allows any character to use any kart body. Character karts can be customized using a variety of different parts, each of which affects the kart's gameplay statistics such as speed or handling. Slime Speedway includes a base roster of 40 playable racers from various Nicktoons, with two additional characters available as downloadable content. All of the core gameplay modes from the previous game return, including the 'Slime Scramble' Grand Prix Free Race Time Trial Challenges and Arena. Up to 90 pit crew characters can be unlocked in Slime Speedway. These abilities can be activated once the player fills a meter by driving through a sufficient amount of slime on the track. The 'pit crew' system from Nickelodeon Kart Racers 2: Grand Prix returns, which allows players to equip special characters before each race that grant them active and passive abilities. As in the original Nickelodeon Kart Racers, vehicles will transform into watercraft at predetermined points in the race to continue progressing through the track. Players must race around a track and attempt to come in first place, using items scattered on the track to hinder opponents or techniques such as drifting and midair tricks to gain speed. Nickelodeon Kart Racers 3: Slime Speedway builds on the gameplay established in previous series entries. The game was released on Octofor Nintendo Switch, PlayStation 4, PlayStation 5, Windows, Xbox One, and Xbox Series X/S. Like its predecessors, Slime Speedway is based around characters from various Nickelodeon animated series, known as ' Nicktoons', participating in kart races and attempting to defeat their opponents. It is the third entry in the Nickelodeon Kart Racers series, following Nickelodeon Kart Racers (2018) and Nickelodeon Kart Racers 2: Grand Prix (2020). Nickelodeon Kart Racers 3: Slime Speedway is a racing game developed by Bamtang Games and published by GameMill Entertainment.

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