Free games like Human-powered spacecraft
Below are 11 free-to-play Steam games similar to Human-powered spacecraft, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Human-powered spacecraft page.
Ranked picks
- 1

Unnamed Space Idle
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Casual with Human-powered spacecraft.
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.
- 2

Clicker Heroes
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie with Human-powered spacecraft.
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.
- 3

Midas Gold Plus - Idle Clicker
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie and Casual with Human-powered spacecraft.
Discover Midas Gold Plus, an engaging idle clicker set in a mythical world! Harness King Midas' golden touch, build a legendary city, and unlock powerful champions. Master unique gameplay styles, explore pet battles, and conquer rival cities. Delve into this ancient tycoon adventure today!
- 4

Magic Archery
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie with Human-powered spacecraft.
Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.
- 5

Revolution Idle
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie and Casual with Human-powered spacecraft.
Join an experience where each revolution takes you further into the unknown! Revolution Idle challenges you to multiply your accumulators to reach unimaginable heights. Will you manage to reach infinity?
- 6

Antimatter Dimensions
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie and Casual with Human-powered spacecraft.
Earn antimatter through dimensions! Gain Infinite antimatter to collapse the universe!
- 7

Leaf Blower Revolution - Idle Game
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie and Casual with Human-powered spacecraft.
Blow leaves, upgrade your gear, and automate your progress as you explore the Leaf Universe. A satisfying incremental idle game where every leaf blown brings you closer to the next big upgrade. Simple, relaxing, and endlessly rewarding. Let the leaves fall, and your progress rise!
- 8

Scream Collector
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Casual with Human-powered spacecraft.
Build up a haunted house in this Halloween themed Idle Clicker game!
- 9

Galaxy Idle Clicker
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. 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!
- 10

Cell to Singularity - Evolution Never Ends
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Casual with Human-powered spacecraft.
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.
- 11

AdVenture Capitalist
Free-to-play alternative to Human-powered spacecraft — no purchase or trial window. Shares Indie and Casual with Human-powered spacecraft.
Welcome, eager young investor, to AdVenture Capitalist! Arguably the world's greatest Capitalism simulator!