Atlas Reactor is a turn-based team tactics game. Everyone takes their turn at the same time, and have 20 seconds to decide what to do, so you don't have to deal with that one slow guy. After everyone makes their choice, the round plays out in front of you. Sort of like a mix of League of Legends and Xcom. If you're curious about the game, now is the perfect time, because it is free to play this weekend.