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

Maktala: Slime Lootfest
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
An incremental game where you kill hordes of slimes and use their loot to become stronger and farm them. Collect powerful loot, master skills, and uncover tons of content.
- 2

PegIdle
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Indie and Casual with Siegeturtle.
PegIdle is a Pachinko idle game! Aim and shoot your balls to clear all the pegs on the board. Recieve gold by hitting the golden pegs or by landing balls into the moving bucket. Purchasing auto ball drop will automaticly drop balls onto the board. Spend your gold on new balls and ball upgrades!
- 3

All Aboard! The Train Defense Express
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Protect the Infinite Power Generator by looping around the train tracks! Battle endless waves of enemies in this unique hybrid of auto-battler, survivor, tower defense, idle/clicker gameplay. How long can you survive?
- 4

Gaiadon: Eternal Quest
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Indie with Siegeturtle.
An Epic Incremental/Idle RPG
- 5

Skeleseller
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
You're a skeleton shopkeep who hires adventurers to collect loot for you after your untimely demise. Send adventurers into battle, sell what they find, and build up your town in this laid-back idle game!
- 6

miniBONG
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
"miniBONG" is a lightweight rogue-like game that focuses on dress-up DIY and idle gameplay, while incorporating elements of combat, character development, and strategy.. You can feel the charm of dressing up and fighting at the same time.
- 7

Cave Heroes
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy and Indie with Siegeturtle.
Lead a party of Cave Heroes to explore dungeons, battle monsters and defeat tough archdemons. Build your village, collect loot, rescue pets and much more in this idle RPG.
- 8

Underboard
Single-player alternative to Siegeturtle — playable solo, no multiplayer required. Shares Strategy with Siegeturtle.
Tactical team-building roguelike auto-battler with active and passive playstyles. Draft a team as you explore maps full of monsters, build synergies, equip items and cast spells to support your team during battles and help them escape the Underboard.
- 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.