Single-player games like Sentinel
Below are 16 single-player Steam games similar to Sentinel, 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 Sentinel page.
Ranked picks
- 1
Cubemen 2
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
Cubemen 2 is a fast paced, action packed, original 3D Strategy game where you use your little Cubemen units to defend and attack enemies in a range of awesome game modes including CTF, Skirmish, Territory and more.
- 2
Sanctum
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
- 3
Prime World: Defenders
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
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.
- 4
Revenge of the Titans
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
The ultimate mash-up of Real-time Strategy and Tower Defense!
- 5
Taur
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?
- 6
Anomaly Defenders
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
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.
- 7
Symphony
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Indie with Sentinel.
A mysterious entity is absorbing and corrupting your music before your very eyes. You must battle through your own song collection and fight to reclaim your music!
- 8
Aegis Defenders
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
Take on wild beasts, ruthless soldiers, and ancient gods in this 2D Action-Platformer inspired by Tower-Defense combat.
- 9
Hexcells
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
Hexcells is an ambient logic puzzle game for PC, Mac and Linux.
- 10
Hexcells Infinite
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
Hexcells Infinite is an ambient logic puzzle game for PC, Mac and Linux.
- 11
Hexcells Plus
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
Hexcells Plus is an ambient logic puzzle game for PC, Mac and Linux.
- 12
SquareCells
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Indie with Sentinel.
SquareCells is an ambient logic puzzle game.
- 13
CrossCells
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Strategy and Indie with Sentinel.
CrossCells is an ambient logic puzzle game.
- 14
Cypher
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Indie with Sentinel.
Cypher is a first person puzzle game about cryptography.
- 15
Epigraph
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Indie with Sentinel.
Epigraph is a short, challenging, language decipherment puzzle game.
- 16
Sound Shift
Single-player alternative to Sentinel — playable solo, no multiplayer required. Shares Indie with Sentinel.
Sound Shift is a VJ style music visualiser mixed with a simple arcade shooter.