Complex sentence: It was the first game in the series that was not developed directly by Team Andromeda; rather, it was developed by Smilebit which had been founded by former members of Team Andromeda.
Split into simpler sentences: It was the first game in the series that was not developed by Team Andromeda; rather, it was developed by Smilebit. Smilebit was founded by former members of Team Andromeda.