Complex sentence: The rights were ultimately bought by Ubisoft for $3.2 million, and within three weeks they had decided that the game required significant changes, delaying the game to September 2013, then December 2013, and later to its eventual release date in March 2014.
Split into simpler sentences: The rights were ultimately bought by Ubisoft for $3.2 million, who delayed the game to December 2013. Within three weeks, Ubisoft decided that the game required significant changes, and ultimately delayed the game to September 2013, then December 2013, and ultimately to its eventual release date in March 2014.