Complex sentence: The rights to the "X-COM" series were also acquired by Take-Two Interactive and 2K Games, in 2012 Firaxis developed', while 2K Marin currently works on "XCOM".
Split into simpler sentences: The rights to the "X-COM" series were also acquired by Take-Two Interactive and 2K Games. In 2012, Firaxis developed', while 2K Marin currently works on "XCOM".