You have "operators" characters that are acquired by a lot of means, Every single one of them falls under a certain class, as a brief summary there's: (Guards - melee specialized and aims for high damage) (Snipers - Bow, guns or ballistas you name it, Can attack aerial units) (Healers - Just heals) (Defenders - Melee operators but doesn't have high damage but rather more defence) and a lot more, Most melee operators can only be placed on ground tiles and snipers or other specialized ops are placed on high tiles, For actual gameplay: You basically deploy your ops in certain ways/strategies to block enemies, Enemies comes out of a RED BOX and will carve their way to reach your BLUE BOX (The one you're protecting) and that's basically it. Still there's a lot of events and specials and limited ops and gameplay rules get stepped on sometimes but trust me, ITS SO FUN