Not content to let Epic Games and Silicon Knights have all the fun, Level-5 -- best known for the Professor Layton series and the tantalizing collaboration with Studio Ghibli, Ni no Kuni -- is being sued by Sega for patent infringement, according to Yomiuri Online.
Sega's allegations are centered on Level-5's Inazuma Eleven, a long-running series of soccer-RPG hybrids that have spawned popular anime and manga series in Japan and Europe.
Specifically, the suit has to do with how players use their fingers or stylus on the DS' touchscreen to facilitate player movement in Inazuma. The original article didn't offer any other details, though, and it is unclear which of Sega's patents are being infringed upon.
Sega is asking that sales of all eight Inazuma games on the DS, Wii, and 3DS be prohibited, as well as 900 million yen (roughly $11 million) in damages. Opening arguments were heard in court last week, and Level-5 has gone on record saying that they are "preparing a rebuttal."