Pest Termina ~ Swarm Defense is a strategy indie simulation game for PC that blends turn-based territory expansion with real-time defensive combat in a roguelike structure. Players manage resources and production on a hex-based world map before switching to battlefield tactics when alien swarms attack. The low-poly aesthetic supports clear visibility of units and terrain during large-scale engagements that can involve thousands of enemies.
Gameplay
The core loop divides each run into distinct phases that feed into one another. On the world map, one turn represents one day. Players settle new regions on a randomly generated hex grid, expand territory, and develop infrastructure using three resources: Ore, Labor, and Power. Mines, housing, and power plants generate these materials, which support production queues at Barracks, Robot Factories, and Foundries. Buildings can be upgraded in tier to access stronger units, while research improves damage and armor across unit lines and unlocks special options for each type.
Watchtowers provide intelligence on incoming hordes. Ignoring a raid allows the swarm to grow stronger over subsequent days. Everything produced and constructed on the map carries over directly into defense battles, creating a direct link between strategic planning and tactical execution. The swarm itself adapts across runs with different hive strains and evolves mid-campaign through traits such as enhanced carapace, regeneration, splitting, tunnels, and siege capabilities.
Game Modes
Each run consists of two interconnected modes. The world map operates as turn-based strategy, where players claim wasteland regions, manage daily production, and position forces ahead of raids. When a horde targets a region, the game shifts to real-time tactics on one of seven terrain types: highlands, canyon, plains, hills, marsh, riverside, or basin. These battlefields feature fortress walls, gates, and chokepoints, with high ground granting range advantages.
Before combat begins, players deploy barricades, turrets, bunkers, and troops. Successful defenses allow reuse of proven layouts in future encounters. Direct command tools include line formations, attack-move orders, control groups, bunker loading for infantry, and assault gunship operations. Outposts can be captured to redirect their firepower against the swarm. Runs conclude after surviving 50 days and repelling a final assault on HQ Heights.
Commanders, Units, and Defenses
Four commanders accompany each run, each bringing unique starting forces, three active abilities, and one passive. The Assault Captain offers Battle Cry, Artillery Support, and Reinforcement Drop. The Reaper provides Piercing Shot, Prone Aim, and Lay Mines. The Steel Lord uses Shockwave, Smoke Grenade, and Field Repair. The Architect deploys Temporary Sentry, Repair Drones, and Electric Shock.
Players command 24 units and turrets spanning human and robotic lines. Marines, Medics, Snipers, Flamethrowers, Machine Gunners, Interceptors, Commandos, Juggernauts, and Assault Gunships form the core roster alongside Robot Troopers, Blast Hounds, Battle Tanks, Flak Walkers, Artillery Walkers, Drone Carriers, and Prism Tanks. Static options include Barricades, Gatling Turrets, Missile Turrets, Mortar Turrets, Railgun Turrets, Laser Turrets, Bunkers, and Gravity Pulsers. The swarm counters with Behemoths, Broodmothers, Artillery Beasts, Bombers, Darters, Sky Mantas, and crimson Champions.
Is It Worth Playing?
Pest Termina ~ Swarm Defense suits players who enjoy hybrid strategy experiences that reward long-term planning on the map with immediate tactical decisions in battle. The roguelike structure encourages repeated runs to test different commander choices, research paths, and defensive layouts against an evolving enemy. Four difficulty levels and a guided practice battle support newcomers, while the 50-day survival goal and adaptive swarm provide consistent challenge for veterans. The direct carryover of map progress into combat creates meaningful progression without unnecessary complexity. Those seeking a focused single-player strategy title with clear resource systems and large-scale real-time defense will find the mechanics align closely with the described systems.
