Single-player games like Replicube
Below are 13 single-player Steam games similar to Replicube, 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 Replicube page.
Ranked picks
- 1

Crapht Box
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
Crapht Box is a Fantasy Physics Sandbox, inspired by the Fantasy Console genre. It brings a simulated world with a number of disks and tools, and leaves you to play, program, create and share disks.
- 2

marblebuilds
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
Not your ordinary marble physics sandbox. Watch the simulation play out, or control the marbles yourself. Snap blocks to an infinite grid to build anything you can imagine: automated music tracks, functional calculators, precision platformer courses, pinball machines, and playable minigames.
- 3

ProBelt
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
ProBelt is a game in which you calculate results by using mathematical operators. Conveyor belts are used to transport numbers between operators.
- 4

OCTOPTICOM 3D
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
OCTOPTICOM 3D is a major upgrade to your favorite open-ended puzzle programming game about designing and optimizing optical computing devices. Featuring 3D graphics and gameplay, refined ui, rewritten simulation, all original levels and components plus new additions, histograms and more.
- 5

Gravity
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
Welcome to the world of Gravity! 100 levels of physics and logic await you. Solve puzzles, place blocks, and enjoy completing each level!
- 6

Block Motion
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
Block motion is a puzzle / design game where you place functional blocks to design a working factory. Build your design, press play and watch your factory in action. You have the freedom to solve the challenges any way you want; The only limit is your imagination.
- 7

The Signal State
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
Set in a post-apocalyptic future, The Signal State puts your logic skills to the test with complex puzzles inspired by modular synthesizers. Repair machines, rebuild an abandoned farm, and be part of a revolution that will change the fate of agriculture once and for all.
- 8

Linkito
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
Unleash your brainpower in Linkito and ignite the insurgency! Link, build, solve, defuse, and decode by using your logic. Craft your own challenges in the level editor or tackle community creations.
- 9

Picross Fairytale - nonogram: Red Riding Hood secret
Single-player alternative to Replicube — playable solo, no multiplayer required.
200 biggest nonograms! Discover the magical world of Red Riding Hood!
- 10

The Zachtronics Solitaire Collection
Single-player alternative to Replicube — playable solo, no multiplayer required.
The Zachtronics Solitaire Collection is here! Inside you will find all seven Zachtronics solitaire games, updated with new 4K graphics, plus one brand new Tarot-themed solitaire variant only available here.
- 11

Parking Garage Rally Circuit
Single-player alternative to Replicube — playable solo, no multiplayer required.
Retro Arcade Rally Racing... in Parking Garages?!? Precision driving with tight simple controls and arcade physics, all in a Sega Saturn style presentation
- 12

JellyCar Worlds
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
It's a Car, made of Jelly! Squishy Physics, Tactile, Silly & Imaginative Driving/Platforming
- 13

Pro Gymnast Simulator
Single-player alternative to Replicube — playable solo, no multiplayer required. Shares Simulation with Replicube.
THE 100% physics-based athlete simulator.