Single-player games like Alien Robot Monsters
Below are 10 single-player Steam games similar to Alien Robot Monsters, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Alien Robot Monsters page.
Ranked picks
- 1
Infested Planet
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Action and Strategy with Alien Robot Monsters.
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
- 2
Revenge of the Titans
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Action and Strategy with Alien Robot Monsters.
The ultimate mash-up of Real-time Strategy and Tower Defense!
- 3
Anomaly Defenders
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Action and Strategy with Alien Robot Monsters.
Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.
- 4
Super Sanctum TD
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Strategy and Indie with Alien Robot Monsters.
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
- 5
Alien Shooter TD
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Action and Strategy with Alien Robot Monsters.
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!
- 6
Defense Grid: The Awakening
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Strategy and Indie with Alien Robot Monsters.
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
- 7
Sentinel 3: Homeworld
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Strategy and Indie with Alien Robot Monsters.
The biggest installment of the award winning Sentinel sci-fi tower defense series now on PC!Take the fight to the alien homeworld and unleash a massive arsenal of weaponry. Get up close and personal on the battlefield in your power armor to execute devastating attacks and support your defenses! * An epic campaign across 20 levels.
- 8
Mechs V Kaijus - Tower Defense
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Action and Strategy with Alien Robot Monsters.
Mechs V Kaijus is an addictive hardcore tower defense gameplay. In Mechs V Kaijus you take on the role of Commander of a powerful Mechs squadron. Improve your Mech, strategically place towers and factories on the battlefield. Deploy support units on the battlefield, and save our civilization.
- 9
Bloons TD 6
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Strategy with Alien Robot Monsters.
The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available.
- 10
GRID DEFENSE: GRID WAR
Single-player alternative to Alien Robot Monsters — playable solo, no multiplayer required. Shares Strategy and Indie with Alien Robot Monsters.
Build towers, unleash ultimates and command six heroes in sci-fi tower defense. Play all 100 Scenario stages free. Try one-minute highlights of Basic and GRID COMMAND before purchase, then take your aerial fleet into GRID COMMAND's survival battles.