The game is a tower defense game, but the gameplay incorporates many of the previous games in the same genre, with an emphasis on character collection, team building and development, and more complex terrain and map object elements. In addition, the levels that have been passed can be automatically fought through the agent command function, which allows the program to record the recent player's playing habits. 

The characters that appear in the game are called cadres. There are two positions (melee position and long-range position) and eight professions (vanguard, close guard, heavy armor, special, medical, warlock, sniper, and support). Among them, the vanguard, guard, heavy belong to the melee position (some special cadres can be placed in the remote position), used to block the advancing enemy; medical, artisan, sniper, support belong to the remote position, used to attack at a distance, but usually can only block one enemy (special level); and the placement of special varies from cadre to cadre, but most of them are placed in the melee position. Players must place these cadres in appropriate positions to intercept enemies attacking from intrusion points and prevent them from entering the protected objective.