Time race and time based game modes

Hello everyone, I just got an idea for a game mode similar to standard RTS 'wonder' so basically 2 (or more) players are put on a planet/s which are going to collide/fall into star/black hole/whatever causing player to loose and in order to win he has to create long distance travel spaceship allowing for escape from that solar system. Before time-up players collect resources but also can attack each other to destroy enemy or slow down production for price of wasting resources on military units. There could be different types of maps i.e. 2 planets circulating each other and as closer they get it is easier/faster to send units between them for quick attacks or 2 planets with different orbits around black hole where connection for sending units between them is only possible for a short time and after that they are again separated as one planet goes faster from the other and they can't transport units around black hole. Amount of possible awesome scenarios is infinite!

What do you think people??? C: