Single-player games like Siegeturtle
Below are 11 single-player Steam games similar to Siegeturtle, 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 Siegeturtle page.
Ranked picks
- 1

Monster Tiles TD: Tower Wars
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Free Tower Defense game with unique roguelike elements. Custom base building mechanics allow you to create your own base and maze with tiles earned after each wave. Unleash a variety of monsters, each with its own evolution path and unique skills, and evolve them into legendary creatures.
- 2

Rejected Draft
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
You are a flawed doodle thrown in the trash. Battle rival sketches in an idle climb for revenge. Every enemy is drawn by community artists, with alternate versions and direct credits. In an unusual twist on builds, choose which enemies appear in your world, then defeat them to absorb their powers.
- 3

Incrempire
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Defend. Upgrade. Dominate. A relaxing incremental base-defense game, packed with powerful skills and a deep skill tree.
- 4

Monster Masher
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Drop monsters. Merge monsters. Pray the pit doesn't overflow. Monster Masher is a cozy-yet-chaotic puzzle game where matching creatures fuse into bigger beasts. Build combos, fight bosses, and pretend you're not addicted. You are though. Fr fr.
- 5

Seed World
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Seed World is a game that aims to combine automation, conveyor belts, and level progression. The game simplifies automation 'construction' into a series of progress bars, with each progress producing or consuming resources, and players need to manage resources.
- 6

Roller Coaster Looper
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
A roguelite idle-like roller coaster sim where you draft track segments, recruit riders, and combo card upgrades between rounds, then watch the thrill scores spiral gloriously out of control. Physics optional.
- 7

Aleef: Desktop Pet Collector
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Work, browse, or play other games while hatching eggs in the background! Collect 300+ pets with various stats, unlock powerful upgrades, and build your battle team.
- 8

Dig n Fight
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Indie and Casual with Siegeturtle.
Dig n Fight is a roguelite idle game with backpack management. Equip yourself with treasures, skills, and runes to defeat your foes and bring back all the loot.
- 9

Clicker Heroes
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Click your way through hordes of monsters, earn gold, and recruit quirky heroes with powerful skills. Progress even while you're idle, and watch the numbers climb into the absurd. It’s a never-ending journey of clicks, crits, and colossal damage.
- 10

Havendock
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Breathe easy and thrive in this cozy colony sim. Build a haven for castaways, manage resources, live your best life on the ocean. Lead your humble settlement into a high-tech society.
- 11

Stormbridge
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Can you build the longest bridge before the storm catches up? Stormbridge is a roguelite city builder about growth, survival, and watching everything fall apart. Stay ahead of the danger, unlock upgrades between runs, and uncover the storm’s origin.