Treasure next embarked on a series of licensed projects. Two of these were based on the "Tiny Toon Adventures" franchise, ' (2002) for the Game Boy Advance and the unreleased ' for the PlayStation 2. Other licensed games during this period included Game Boy Advance games "Hajime no Ippo: The Fighting!" (2003) and ' (2003), as well as GameCube games "Wario World" (2003) and ' (2003). "Astro Boy: Omega Factor" was co-developed with Hitmaker and was critically praised for returning to Treasure's classic side-scrolling action style that had been missing from their recent output. Their next game was "Gradius V" (2004) which like "Ikaruga" before it, was co-developed with G.rev. The companies worked under contract for Konami, and the game helped cement Treasure's return to critical successes following a slew of mediocre licensed games.