Complex sentence: Development later went into the Nintendo GameCube in 2000 before eventually selling the rights to Microsoft in 2005 where it was announced to be released for the Xbox 360 where it eventually became a finished product.
Split into simpler sentences: Development later went into the Nintendo GameCube in 2000 before eventually selling the rights to Microsoft in 2005. It was then announced to be released for the Xbox 360 where it eventually became a finished product.