Fire, Oil, Ice, Poison Gas, Water, Seeds and Growing Plants are just a few of the elements you'll have to strategically navigate. Customize your deck and upgrade cards along the way. Make sure it is well balanced to handle a variety of environmental effects. Can you melt ice? Can you stop mutant plants? Foresight is key. Deal damage card by card, when your stack is exhausted the enemies get their chance to attack! They will create defensive barriers, throw damage cards at you, buff themselves and heal others! Anticipating their moves and playing the right card is key. Choose your path through the alien universe. Each run is different so you can replay many times without getting bored. Besides the playable levels, you'll encounter shops, hospitals, and dozens of different bonus challenges. Picking the right path is key to survival.