Single-player games like Chthonian TD
Below are 9 single-player Steam games similar to Chthonian 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 Chthonian TD page.
Ranked picks
- 1

Siege of Nightmares
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Strategy with Chthonian TD.
Siege of Nightmares third-person action tower defense where a wooden jester toy defends your childhood self from their nightmares. Build and upgrade defenses, combine tower effects, fight alongside your creations, and survive increasingly dangerous waves before the nightmare consumes the defense.
- 2

Warriors of the End
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Indie with Chthonian TD.
Warriors of the End is a fast-paced tower-defense horde-battler roguelike. Defend the Princess against enemy hordes by strategically positioning and upgrading your towers, customize unique characters with deadly weapons and spells, discover mindblowing synergies and create game-breaking builds!
- 3

Malignant Survivors 2
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action with Chthonian TD.
Experience the most intense 3D crowd combat ever. Pick a hero, gear up and face the horde. Grab loot, get stronger and stay alive. Died? Try another hero, another build. Find your own path to the Abyss.
- 4

Mycofall
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Indie with Chthonian TD.
Mycofall is a survivors-like auto-shooter with ONLINE CO-OP for 1-4 players. Defeat hordes of infected insects to evolve and morph powerful abilities and weapons. Collect mycelium, grow stronger, unlock permanent upgrades and defend the forest solo or in online co-op.
- 5

REBELLION PRINCESS|リベリオン プリンセス
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Strategy with Chthonian TD.
Raise your favorite characters and have them ready to fight in the next run! Command beautiful girls to defend the castle and princess A non-reset roguelite × tower defense
- 6

Witchtower: Spell Siege
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Strategy with Chthonian TD.
Hand-aim artillery spells, blast a gothic horde into fully simulated pixel gore, and draft 200+ upgrade cards between waves to defend your witchtower. A fast 2D roguelite tower defense. Play solo or in local co-op.
- 7

Ironfront Express
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Strategy with Chthonian TD.
Upgrade your engine’s arsenal in this bullet hell, tower defense roguelite featuring the most heavily armored locomotive in existence. Engineer and command the Ironfront Express in a unique take on lane defense where you upgrade with specialized turrets, drones, and tactical abilities.
- 8

Netherhunt
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Action and Indie with Chthonian TD.
A dark fantasy survival roguelite where you hunt demonic hordes, master evolving weapons, and forge devastating builds across cursed realms.
- 9

Dark Gem Tower Defense
Single-player alternative to Chthonian TD — playable solo, no multiplayer required. Shares Strategy with Chthonian TD.
Atmospheric tower defense. How many waves can YOU defend? Basic tower defense in a fantasy setting with gems.