Tactics was created by a company in Australia for BIS(from what I remember), and was a spin off with a very specific direction and agenda. It was fun and I think was more of a proof of concept of having a real time based game that used an action points(which I wish Bethesda did with Fallout 3 and not just restricted action points to VATS only), but left in the TB mode as not to tick off the Die hard fans.
Tactics was great, right up there with the X-com series, but I liked their continuous turn mode much better.
I also enjoyed a mix of Fallout, Though I do wish they would have been able to finish the game properly. It was an unfinished game imo.