Single-player games like Old School Tower Defense
Below are 8 single-player Steam games similar to Old School 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 Old School Tower Defense page.
Ranked picks
- 1
East Defense
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy with Old School Tower Defense.
East DefenseYour duty is to protect the castle by strategically building & upgrading towers to stop monsters from coming their way!
- 2
The Hero We Need
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Old School Tower Defense.
Create your own distinctive towers, enhance only the necessary components, and experiment with them in quick battle mode. THWN enables you to craft each tower individually using runes that determine the projectile and its effects, giving you the freedom to adopt strategies that suit your play style.
- 3
Stand Your Ground
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy with Old School Tower Defense.
Defend attacks from enemies from all directions within a limited time. Only by making full use of the differences in each tower and choosing appropriate random rewards can you survive.
- 4
Defenders of Legends
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy with Old School Tower Defense.
Defend your kingdom against legendary monsters. Place turrets strategically to block their path. Upgrade your defenses to fend off enemy hordes. Become the legendary guardian of the earth alone or in co-op!
- 5
Swarming Planet
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy with Old School Tower Defense.
Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.
- 6
Gregg: Tower Defence
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy with Old School Tower Defense.
Play as Gregg. Gather, build and destroy your slimy enemies in this thrilling pixel art tower defence!
- 7
Amogus TD 2 - Defense of the Sus
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy with Old School Tower Defense.
Sussy tower defense game with unlimited ways to play the game. Play with unique towers and upgrade them to create perfect defense. Master every map and become the greatest sussy commander.
- 8
Tower Defense: Defender of the Kingdom
Single-player alternative to Old School Tower Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Old School Tower Defense.
Defender of the Kingdom: Tower Defense is a colorful medieval tower defense strategy game where orcs and their horde attacked the kingdom and now the fate of the kingdom is in your hands, defenders!