Plan B: Terraform

Developer: Gaddy Games
Released: Aug 29, 2025
Steam reviews: 91% of players recommend it, from 3,697 reviews — Steam calls that “Very Positive”
Tags: IndieSimulationStrategy

On Linux, Steam Deck and Steam Machine

Proton: PlatinumDeck PlayableSteam Machine: PlayableSteamOS Compatible

This game runs perfectly out of the box under Proton, per ProtonDB reports (15 reports). Valve rates it Playable on Steam Deck.

Valve rates it Playable on Steam Machine. Valve marks it SteamOS Compatible.

Proton tier: ProtonDB · Deck rating: Valve · Steam Machine, Steam Frame and SteamOS ratings: Valve · Compare 2,053 games · Every game Valve rated for Steam Machine

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Where to buy

Steam

Buy on Steam

Compare elsewhere:GOG ↗Epic ↗

What owning this involves

Cloud saves · The store backs this game's saves up. That cover ends if your account does.From the store listing
Mod support · The store lists official mod, Workshop or level-editor support.From a publisher-set store category

Only what the store discloses. Nothing listed here means the store disclosed nothing — not that there is nothing to disclose.

Features

Single-player
Steam Achievements
Steam Trading Cards
Steam Workshop
Adjustable Text Size
Custom Volume Controls
Adjustable Difficulty
Mouse Only Option
Playable without Timed Input
Save Anytime
Stereo Sound
Steam Cloud
Family Sharing

From the game's Steam store page.

Languages

English
French
German
Japanese
Korean
Russian
Simplified Chinese
Portuguese - Brazil
Spanish - Spain
Italian
Czech
Polish
Thai
Turkish
Ukrainian
Traditional Chinese

Steam lists 16 languages.

Age rating & content

DEJUS L · Violência fantasiosaThe rating board's own rating, as Steam relays it
IGRS 3The rating board's own rating, as Steam relays it

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About this game

The developer's description, from the game's Steam store page.

Transform a Barren World into a Thriving Planet

Plan B: Terraform is a calm and contemplative sci-fi simulation game set in a near future where humanity must look beyond Earth for survival. Your mission: shape a newly discovered planet into a habitable world. Explore a vast, hex-based terrain with over a million tiles and harness a full ecosystem simulation.

Shape Climate, Water, and Life

Raise global temperatures with greenhouse gas generators, unlock underground ice to form flowing rivers and vast oceans, and restore vegetation across the land. Experience dynamic weather systems, including evaporation, wind patterns, and rainfall. Turn a lifeless rock into a living world covered in forests, rivers, and oceans.

Build Supply Chains and Grow Cities

Extract minerals, manufacture goods, and move them with trucks, trains, drones, and ships. Establish automated supply lines to support expanding cities, transforming small outposts into thriving metropolises with populations in the millions. Every stage of growth depends on your ability to manage logistics, optimize infrastructure, and keep automation running smoothly.