
The two Game Boy Advance titles inspired by the 2003 TMNT animated show were later made available together on a single cartridge.
TMNT 2003: The core gameplay loosely follows these Season One episodes: "Things Change," "A Better Mouse Trap," "Attack of the Mousers," "Meet Casey Jones," "Nano," "Darkness on the Edge of Town," "The Way of Invisibility," "Notes From the Underground" (Parts 1-3), and "Return to New York" (Parts 1-3), plus one level that doesn't come from the animated series at all. Right after a squad of mouser robots destroys the Turtles' old hideout, they start searching for a new place to live. Michelangelo's constant teasing eventually gets to Raphael, who storms out to the surface. There, he runs into Purple Dragon goons, Casey Jones, and Dragonface. Baxter Stockman soon captures Raphael using invisible Foot Clan ninjas, and Donatello must go in to save him. Later, while Raphael and Michelangelo play-fight, Donatello examines a strange crystal he found in their old home, noting it resembles mutated brain cells. Raphael accidentally kicks Michelangelo into a wall, uncovering a hidden tunnel. The crystal begins to glow, and the Turtles decide to explore it. As they follow the tunnel, they’re met by genetically altered humans. After a few fights with these mutants, the Turtles learn they were transformed by Shredder’s old experiments. The crystals Donatello found are the only things keeping the mutants alive, trapping them underground. The mutants beg the Turtles to stop Shredder so no one else has to suffer like they did. The Turtles vow to defeat Shredder once and for all, promising to return if they ever find a way to reverse the mutants' condition. TMNT 2: Battle Nexus: The game opens with a clash against the Foot Clan and Hun at Oroku Saki’s high-rise. The Foot is defeated, and Master Splinter vanishes under mysterious circumstances. The Turtles follow a lead to a building labeled "T.C.R.I.," which hides a shocking secret beneath its plain exterior: the staff are members of a brain-like alien species called the Utroms. While fighting these new enemies, the Turtles are unexpectedly teleported across the galaxy, landing on D'Hoonib where they meet the Fugitoid, Professor Honeycutt. They become caught in the middle of a war between the Triceratons and the Federation, both after Honeycutt for his advanced tech. Along the way, they encounter a legendary bounty hunter named Slashuur, said to be the most feared in the universe. Honeycutt had heard tales of him as a child, but ironically, Slashuur is after Honeycutt, hired by the Triceratons to capture him. After the Turtles defeat him, Slashuur shares knowledge about Hamato Yoshi before departing. Before leaving the Triceraton homeworld, the Turtles befriend and free a noble Triceraton warrior named Traximus, who had been forced into gladiatorial combat. Returning to Earth and the T.C.R.I. building, the Turtles learn the Utroms had rescued and healed Splinter. The Utroms place the Turtles and Splinter into a virtual reality system to explain their origins. Long ago, the Utroms were traveling through space, carrying a dangerous criminal from their own kind, Ch'rell. Their ship crashed in Japan, where Ch'rell escaped while the Utroms waited for Earth’s technology to advance enough for them to return home. Later, after recruiting human Guardian Ninjas, the Utroms are ambushed by a heavily armored warlord known as Shredder. In the real world, Baxter Stockman sabotages the VR machine, causing the virtual threats to manifest as real dangers. After defeating Shredder and his Feudal Foot Clan, the Turtles meet Utrom Mortu, who gives them a device to return to reality. Unfortunately, when they arrive, they find Shredder and the Foot attacking the T.C.R.I. building. During the battle, an organic destruction device is set, and the Utroms escape via their Transmat. The Turtles stop Shredder from pursuing them, and it’s revealed that this Shredder is the same one from Feudal Japan—and also the Utrom criminal Ch'rell! The Turtles escape just before the device detonates, but Ch'rell is not so lucky.
| GBA | March 17, 2006 |


