Single-player games like Ancient Planet Tower Defense
Below are 9 single-player Steam games similar to Ancient Planet Tower Defense, 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 Ancient Planet Tower Defense page.
Ranked picks
- 1

2112TD: Tower Defense Survival
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.
- 2

Defend Your Life: TD
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
Defend Your Life! Is tower defense set in human body where players are fighting against villain hordes of viruses and bacteria. Levels and units correspond to reality of human anatomy.
- 3

Royal Defense
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
The castle needs a hero – hordes of trolls are surrounding it! Build towers, save money, learn spells - don't let the enemy in! Follow the exciting story of the dwarven kingdom's eternal struggle against the troll hordes, who want only to crush the dwarves and claim their territory.
- 4

Iron Sea Defenders
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
Man the guns! The enemy fleet is on the horizon! Defend your fort from attacks – show your tactical skill.
- 5

Evil Defenders
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
Evil Defenders is a fun, frenetic defense game: build and upgrade your towers, сast spells to repel enemy forces, use special landmarks and defend the Lands of Evil from invaders! Feel free to play the game in many different ways through unique tower upgrades, a deep skill tree and 100 in-game achievements.
- 6

Plants vs. Zombies GOTY Edition
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy with Ancient Planet Tower Defense.
Zombies are invading your home, and the only defense is your arsenal of plants! Armed with an alien nursery-worth of zombie-zapping plants like peashooters and cherry bombs, you'll need to think fast and plant faster to stop dozens of types of zombies dead in their tracks.
- 7

Super Sanctum TD
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
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!
- 8

Prime World: Defenders
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Ancient Planet Tower Defense.
Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.
- 9

Garden Rescue: Christmas Edition
Single-player alternative to Ancient Planet Tower Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Ancient Planet Tower Defense.
Rescue the Christmas trees from swarms of ravenous insects.