Single-player games like Human-powered spacecraft
Below are 10 single-player Steam games similar to Human-powered spacecraft, 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 Human-powered spacecraft page.
Ranked picks
- 1

Lazy Galaxy
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie with Human-powered spacecraft.
Lazy Galaxy is a mix between RTS and idle/clicker game. Lead an evil (albeit lazy) alien race to conquer the universe!
- 2

Tap Heroes
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie with Human-powered spacecraft.
Welcome to the first puppet show RPG! Participate in battling a ton of foes, buy new upgrades, cast magic and recruit new Heroes. Or just sit back and enjoy the show as your Heroes fight on their own while you watch or do other things.
- 3

Plantera
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie and Casual with Human-powered spacecraft.
In Plantera you build your own garden and watch it grow with new plants, bushes, trees and animals. As you play and expand your garden you will attract Helpers, round blue creatures that will help you with your harvesting tasks.
- 4

Galaxy Idle Clicker
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie and Casual with Human-powered spacecraft.
Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe!
- 5

SPACEPLAN
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie and Casual with Human-powered spacecraft.
SPACEPLAN is an experimental piece of interaction based partly on a total misunderstanding of Stephen Hawking’s A Brief History of Time.
- 6

Cell to Singularity - Evolution Never Ends
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Casual with Human-powered spacecraft.
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.
- 7

Universe Horizon
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie with Human-powered spacecraft.
An idle incremental game where you decide to travel across the whole Universe. Embark on this journey in your little ship and get as far away as possible from Earth, gathering resources and upgrading your spaceship along the way.
- 8

AdVenture Capitalist
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie and Casual with Human-powered spacecraft.
Welcome, eager young investor, to AdVenture Capitalist! Arguably the world's greatest Capitalism simulator!
- 9

GUNFIELD
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie and Casual with Human-powered spacecraft.
GUNFIELD – A game that combines the genres: shoot 'em up, roguelite. Choose the perfect weapon combinations and upgrade your ship to destroy hordes of enemies and giant bosses, using strategy and a powerful arsenal.
- 10

Anstorm
Single-player alternative to Human-powered spacecraft — playable solo, no multiplayer required. Shares Indie with Human-powered spacecraft.
Simple and gripping gameplay most commonly as a classical arcade shooter. The game consists of short levels which is perfect for short breaks to relax.