Single-player games like Conspiracy TD
Below are 8 single-player Steam games similar to Conspiracy TD, 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 Conspiracy TD page.
Ranked picks
- 1

Permanence TD
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy and Indie with Conspiracy TD.
Tower defense that will make you think
- 2

Gem Rifts
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Indie with Conspiracy TD.
Ancient portals have been lying dormant, waiting for daring adventurers to travel between worlds. Your task is to lead an expedition through one of these portals, research and build defenses around it, and protect it from hostile guardian life forms.
- 3

Pyrewarden
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy and Indie with Conspiracy TD.
A real-time fantasy tower defense where adjacency matters. Master 12 magic schools, blend them through 66 unique synergies, and defend across 21 distinct maps. 144 tower variants, deep upgrade trees, endless wave escalation. Play solo or in online co-op.
- 4

Legion TD 2 - Multiplayer Tower Defense
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy and Indie with Conspiracy TD.
An infinitely replayable multiplayer and single-player tower defense. Defend against waves of enemies and destroy the enemy's king before they destroy yours. Legion TD 2 is a one-of-a-kind game of tactics, teamwork, and prediction. Party as 1-8 players.
- 5

The Final Bastion
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy with Conspiracy TD.
The Final Bastion is a Multiplayer PvP & PvE Tower-defense with a classic Medieval-Fantasy theme. Compete against players in head to head online in a PvP, sending waves against the enemy and growing your economy. Play side by side with your friends in PvE and see who survives the longest.
- 6

Sci-Fantasy Defence
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy and Indie with Conspiracy TD.
Combine physics-based traps, weapons and magic to defend against horde of thousands enemies in this roguelike tower defense with procedurally generated levels and switching between building/combat. Do it solo in VR or with up to 4 players in one PC through local co-op.
- 7

Age of Darkness: Final Stand
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy with Conspiracy TD.
Age of Darkness: Final Stand is a dark fantasy survival RTS where you must illuminate, build and defend humanity’s last bastion against hordes of Nightmares. Set in the remnants of a kingdom consumed by a deadly fog, you decide. Will you hide in the light? Or take back your world.
- 8

Dig or Die
Single-player alternative to Conspiracy TD — playable solo, no multiplayer required. Shares Strategy and Indie with Conspiracy TD.
Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.