We have been working on the game AI (Artificial Intelligence) that will take care of planetary attacks. They happen when aliens decide to return to 'Deep Rift 9'™ to claim it as their own and start attacking players and taking over ruins on the planet surface.
During our initial coding the aliens landed among the players as planned but they seemed to have a problem with distribution being to many and too close to player bases. At the time the AI was ready to launch its first attacks on players the AI turned out to be more than evil and a bit too dedicated to slaughter the nearest players. In stead of distributing their attacks randomly it targeted two nearby bases and sent out every troop the aliens had in order to destroy the bases. No need to say that it would have been a pretty boring and short lived gaming experience if we had left the AI rule the planet at this point.
Of course balance is most important to us and this among so many other features will be tested rigorously before entering the final game, and you are invited to help us test it. Join the pre alpha test now and see for yourself.