Build structures on seven different planets with unique environments. Customize designs using unlimited resources. Create houses for cute aliens and explore open-world areas. Save and return to your constructions anytime.
Build towers to defend against waves of . Upgrade defenses, hire Special Agents, and complete tracks. Compete on leaderboards with rewarded achievements. Customize towers with new graphics and special missions.
Build and customize towers to defend against waves of enemies. Upgrade tower abilities and manage resources. Complete levels to unlock new characters and strategies. Track progress and replay challenges.
