Single-player games like Law of Entropy
Below are 8 single-player Steam games similar to Law of Entropy, 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 Law of Entropy page.
Ranked picks
- 1

The Aether Project
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
A classic tower defense game with evolving battlefields and relentless waves. Build deadly defenses, adapt to new attack routes, and survive escalating enemy assaults.
- 2

Train Trek
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
Tower defense on rails. Wake the last war-train in a steampunk world that needs you: build your armored consist car by car, bristle it with turrets, and harvest fuel on the move as you hold the line across a vibrant frontier. Capture towns, upgrade your train, and follow a lone survivor onward.
- 3

TailQuest Defense
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
Explore a tiny world, defeat hundreds of enemies, experiment with the environment, find all secrets and enjoy the Adventure with a friend or in single player mode!
- 4

Refund Me If You Can : Lexy's Story
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Indie with Law of Entropy.
Lexy grandmother is sick. Will you be fast enough to bring her medication in time ?
- 5

Automate Defend Repeat
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
Automate, Defend, Repeat: A combination of factory management and tower defense strategy. Build a planet-dominating factory, defend it from disgruntled resource-carrying monsters, and defeat a total of 6 bosses. Once you have done that, select a New Game + modifier and do it again!
- 6

Chthonian TD
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
Fast-paced co-op action roguelite × tower defense. Fight escalating waves, risk resources in a dangerous mine, defeat the boss - then see how long you survive in Endless.
- 7

Orcs Must Die! Deathtrap
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
Orcs Must Die! Deathtrap combines chaotic third-person combat with devious trap-laying strategy. Enjoy endless replayability as your War Mage grows stronger through roguelite progression. Repel relentless orc hordes solo or with up to 4 players.
- 8

Vessel
Single-player alternative to Law of Entropy — playable solo, no multiplayer required. Shares Action and Strategy with Law of Entropy.
Living liquid machines have overrun a world of unstoppable progress and their inventor must stop the chaos in this game about a man with the power to bring ordinary matter to life!