Single-player games like Simultree
Below are 10 single-player Steam games similar to Simultree, 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 Simultree page.
Ranked picks
- 1
Cult Nation
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Strategy and Simulation with Simultree.
A short incremental game about sacrificing all your cult followers and collecting blood to awaken the devil.
- 2
Fishing Inc
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Simulation and Casual with Simultree.
Fishing Inc is a cozy incremental fishing game! Catch fish, earn cash, and unlock powerful skills. Master new ponds, fill your Fish Log with Legendary catches, and become the ultimate angler!
- 3
Black Hole Fishing
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Simulation and Casual with Simultree.
Black Hole Fishing is an absurd incremental game about catching, breeding, and perfecting SO MANY fish. Catch a fish, optimize its traits, then stock your pond with it as you pour fish and science into an endless singularity!
- 4
Auto Snakes in Outer Space
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Casual with Simultree.
A slow and meditative incremental idler where you manage colorful snakes. Watch them collect food, then spend the food on upgrades and abilities for your colony.
- 5
Idle Gumball Machine
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Strategy and Simulation with Simultree.
Plinko-style INCREMENTAL game. Shoot gumballs at gears and buy upgrades to make bigger and bigger numbers until you break the game! Short, sweet, relaxing, and addictive!
- 6
Unboxathon
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Simulation and Casual with Simultree.
Unboxathon is a cute content-packed incremental game about opening mystery boxes. Find rare items, upgrade your skills, and unlock new boxes & features! Collect shiny items, pop bubble wrap, and materialize artifacts out of thin air. Can you find your lost childhood plush?
- 7
All Hail the Orb
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Simulation and Casual with Simultree.
All Hail The Orb is a short, quirky pixel-art incremental game about powering a mysterious orb, summoning cultists, exploring a dungeon and slowly unlocking automation as devotion builds. The tone is light-hearted and a little silly with no fail states, relaxed pacing, and yes...many, many ducks.
- 8
Tiny Biomes: Cozy Idle
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Casual with Simultree.
Tiny Biomes is a relaxing idle game where animals peacefully produce resources and you gather wood in a calm harvesting zone. Build small biomes, earn gold, and enjoy steady progression without pressure, timers, or stress. Play at your own pace and unwind.
- 9
Arrogue
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Strategy and Casual with Simultree.
Collect, upgrade and unlock powerful arrows and relics to protect your village. For that you’ll have to fight against procedurally generated hordes of enemies in this turn-per-turn, physics-based, roguelike! Explore the map, find the right path and make decisive choices in random events.
- 10
Hammer these nails!
Single-player alternative to Simultree — playable solo, no multiplayer required. Shares Casual and Simulation with Simultree.
Hammer 10,000 nails.