Nicktoons Unite! (2005). Play online

Summary

Nicktoons Unite! is a nostalgic handheld crossover that packs several Nickelodeon worlds into one 2‑D platforming adventure. Using pre‑rendered sprites lifted from the DS version, the Game Boy Advance title lets you bounce between two chosen heroes at any point in a level—often SpongeBob and Danny Phantom or Jimmy Neutron and Timmy Turner—to solve puzzles and fend off villains from each universe. The roster hits all the fan‑favorites, from the undersea mischief of SpongeBob to the ghostly antics of Danny, the tech‑savvy gadgets of Jimmy, and the wish‑fulfilling chaos of Timmy, plus brief cameos from the newer Danny Phantom and Rugrats All Grown Up shows. Levels are crafted to feel like stepping inside each cartoon’s set, letting you blast away obstacles with SpongeBob’s Bubble Bombs or wield Jimmy’s long‑range Neutron Flare. It’s a compact slice of early‑2000s Nick nostalgia, perfect for anyone craving a quick, colorful platform run on the GBA.

Storyline

Nicktoons Unite! begins when SpongeBob finds Plankton using giant vacuum machines to seize Bikini Bottom. Goddard emerges from a portal behind his house, showing a message from Jimmy Neutron. Following the robot, SpongeBob meets Jimmy, Timmy Turner and Danny Phantom in Jimmy’s lab, where Jimmy coats him with self‑regenerating moisture and reveals that his Universe Portal Machine has been copied by Professor Calamitous, who has allied with Plankton, Vlad Plasmius and Denzel Crocker to steal energy from their worlds.

The first jump lands them in Vlad’s castle, where he reveals a ghost portal draining the Ghost Zone and has captured Danny’s parents. Imprisoned, they befriend the Box Ghost, defeat Walker and destroy the portal’s generators.

Using Jimmy’s air‑gum, they dive into Bikini Bottom, rescue Patrick from a jelly‑fish harvester, board the Flying Dutchman’s ship, then battle Plankton piloting a giant robotic crab on the Chum Bucket roof, discovering a Doomsday Machine powering scheme.

In Dimmsdale they shut down Crocker’s golden fortress, free the fairies in Fairy World, then return to Jimmy’s lab, shrink into Goddard to destroy a flea‑bot, locate Calamitous’ lair and defeat the Syndicate. SpongeBob unplugs the Doomsday Machine, Calamitous is imprisoned, and Jimmy gives each hero a Neutronic Recaller.