Single-player games like Alien Shooter TD
Below are 15 single-player Steam games similar to Alien Shooter 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 Alien Shooter TD page.
Ranked picks
- 1
Alien Shooter
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
The endless darkness and the somber, long passages of a military complex have become the abode of evil, thousands of blood-thirsty creatures fill its offices, storehouses and mysterious laboratories. About 1,000 monsters on each map, showing up to 100 monsters simultaneously on one playing screen.
- 2
X-Morph: Defense
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Strategy with Alien Shooter TD.
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
- 3
The Rift Tower Defense
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Strategy with Alien Shooter TD.
The Rift is a tower defense game with elements of RPG gameplay that will appeal to players of all skill levels. Enemies from an alternate universe are attacking and it's up to the player to stop them by strategically building defensive towers.
- 4
Automatrons - Tower Defense
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Strategy with Alien Shooter TD.
Join our machine legion to conquer the world.
- 5
Night Light
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Strategy with Alien Shooter TD.
Defend against the creatures of that night! Protect yourself and your lamp by building and upgrading your base. Equip yourself with the best weapons to deal with the incoming waves.
- 6
Deathtrap
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Strategy with Alien Shooter TD.
Deathtrap is a Tower Defense game with strong action-RPG elements, a game of vicious tricks, killing machines, rotating blades and splattering blood.
- 7
SYNCHRONIZERS: UNDEAD MARINES
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Strategy with Alien Shooter TD.
"SYNCHRONIZERS: UNDEAD MARINES" blends high-quality Three-Lane Tower Defense with Reverse Tower Defense gameplay. Command your units in a thrilling narrative reminiscent of a StarCraft and Plants Vs. Zombies fusion! Your choices will forge the path to victory—or defeat.
- 8
Super Sanctum TD
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Strategy and Indie with Alien Shooter TD.
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
- 9
Alien Shooter 2: Reloaded
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
This is the unique alloy of arcade action and RPG elements which combines well-established world of classical games and unmatched dynamics of the first part.
- 10
Alien Shooter 2 - The Legend
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
Meet the completely reworked legendary game loved by millions of players worldwide! Alien Shooter 2 - the Legend is an ambitious follow-up to the famous Alien Shooter series.
- 11
Zombie Shooter
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
The human race is in danger again. This time scientists could not cope the imminent threat and became monsters themselves. Crowds of zombie people filled the secret research base. The dreadful contagion is about to spread earth wide. Use the last chance to save the humanity from total annihilation!
- 12
Alien Shooter: Revisited
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
Crowds of blood-thirsty monsters, crawling from every corner of the secret research base. Gloomy basements and modern labs, darkness changing into blazing bulbs. The only usual thing is: you're in a bad place alone, and there's no one to help you!
- 13
Zombie Shooter 2
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
Just choose a character to the liking, get experience to develop skills, earn money and spend it at weapons, medications and useful devices. All of this will be used against thousands of enemies. The zombies fill the game screen, never letting you rest, even for a minute.
- 14
Alien Shooter 2 Conscription
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
The Great War has begun! The world population capable of functioning is mobilized to serve in the army and the outcome depends on you!
- 15
Alien Shooter - Last Hope
Single-player alternative to Alien Shooter TD — playable solo, no multiplayer required. Shares Action and Indie with Alien Shooter TD.
New chapter in history of the legendary game, including 10 story missions.