Unravel the enigma of our hollow earth in this action packed Platformer Defense game. Play by yourself or collaborate with friends in local multiplayer.The shadows hold secrets you'll never forget... Build your base & blast your way through this nostalgia-inducing journey reminiscent of classic 80s and 90s Science Fiction movies. Fight alongside your friends through couch-gaming local multiplayer as you help each other fight off the hordes of enemies, unlocking new technologies to help you along the way.Build your BaseEach level has red crystals spread around which represent positions players can construct buildings or turrets. Players must choose wisely what to build and where as there are limited build spots and the enemy attack paths can turn out to be... unpredictable... Harvest ResourcesTo accumelate resources, killing the enemy isn't enough. Players need to roam the map for chests to pick up which contain numerous random rewards. In addition blue crystals are spread around the map which players can harvest for funds. Defend your BaseYour base is a lot more than just turrets: you can buy / upgrade weapons, items, and more! Using a combination of weaponry and structures you need to defend your HQ from the enemy hordes until the end!