Monster Dungeon Defenders

Card like game where you keep adventurers at bay as long as possible. The longer the adventurers are delayed by your monsters, the more mana is gained. Buy monster cards using mana. Gather a large enough army and get the dungeon up to S rank! Things may be a bit buggy. Still testing through things. Also lacking music at the moment. Feel free to leave comments, good or bad as long as theyre constructive. Thanks!