Single-player games like Invader TD
Below are 9 single-player Steam games similar to Invader 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 Invader TD page.
Ranked picks
- 1
AGE OF ALIENS
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Casual with Invader TD.
On an alien world, you must defend yourself in this unique base-building tower-defense game. Build a base by placing blocks, turrets and traps in order to survive the hoards of aliens.
- 2
PENGUINS VS SEALS
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Indie with Invader TD.
PENGUINS VS SEALS is a side-scrolling real-time strategy game that blends tower defense and unit deployment. Build production structures, command your forces, and push the frontline forward using tactical decisions and battlefield abilities.
- 3
Castle Combat
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Casual with Invader TD.
RTS, but the soldiers will act automatically: Each soldier has different characteristics/attribute values/action methods. Choose the appropriate soldiers and buildings according to the battlefield situation, and destroy the opponent's castle only through your strategy rather than operation!
- 4
![Human Defense [RTS] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1549870/header.jpg?t=1675054421)
Human Defense [RTS]
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Indie with Invader TD.
The earth was invaded by aliens, and human beings resisted alien species and deduced the most meticulous battle outcome with the simplest control method
- 5
Kings of Cratia
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Indie with Invader TD.
Kings of Cratia offers an experience that mixes real-time strategy and first-person shooter mechanics. Build your new village and manage your resources efficiently. Be ready to defend your village every day when night falls! RTS or FPS, you are free to protect your village any way you want it.
- 6
Mechanocide: Fortress Omega
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Indie with Invader TD.
On a forgotten world, confront a malevolent machine intelligence. Extract minerals, build factories, power up the railguns, and arm the missile batteries. Defend the Fortress Omega against the alloyed nightmare.
- 7
Castle Push
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Indie with Invader TD.
Castle Push is a fantasy and strategy game developed by Blue Cat Studio. Play the classic browser strategy. Complete all levels and unlock all possible achievements in this game. And listen to the best music from Haindale.
- 8
Dwarven Village
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Strategy and Casual with Invader TD.
Dwarven Village is a tower defense game that you place your units to enemy paths and towers to the sides to support, Open chests, Unlock new troops & towers and use synergies between them
- 9
Cato, the cat
Single-player alternative to Invader TD — playable solo, no multiplayer required. Shares Casual with Invader TD.
Take care of Cato using a match 3 mechanic and don't let him get away.