Life & fun · alternatives · 2026
24 alternatives to I created a Mars colony RPG based on Kim Stanley Robinson’s Mars books
I built a desktop Mars colony survival game called Underhill, in homage to Kim Stanley Robinson's Mars trilogy. Land on Mars, build solar panels and greenhouses, and try not to pass out during dust storms. Eventually your colonists split into factions: Greens who want to terraform and Reds who want to preserve Mars. There’s Chill Mode for players that just want to build & hang, and Conflict Mode that introduces the Red v. Green factions. Reds sabotage, the terrain slowly turns green as the world gets more terraformed. Feedback welcome, especially on performance and gameplay!
Underhill is a desktop Mars colony survival game inspired by Kim Stanley Robinson's Mars trilogy. Players land on Mars, construct infrastructure like solar panels and greenhouses, and manage colonist survival through… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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My cousin and I love the Terraforming Mars board game. But we'd often get overly excited and knock our pieces off of our boards, losing track of our progress. So I digitised it. It comes with a few cool features like resource conversions (e.g. converting plants to greenery), production phase, offline, mobile-friendly and keeps track of the history using the browser history itself. Sharing this here in case there are any other TM fans that could also find some use in this :)
2024 · terraforming-mars-player-board.netlify.app · its alternatives →
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- 3AF
I've seen some interests in (simulation) video games here on HN so I thought I'd share a short version of our story. More than 6 years ago, me and my friend from university were playing around with an idea of making a game we always wanted to play. We worked on it on weekends but the progress was quite slow, especially due to so many dead ends and wasted effort. Eventually however, we solidified our direction and decided to take the risk to resign from our well paid SWE jobs and work on it full time. It took more than a year but yesterday we have finally released it on Steam:…
2022 · its alternatives →
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It all started as an experiment to see if I could build a game making heavy use of Deno and its SQLite driver. After sharing an early build in the „What are you working on?“ thread here, I got the encouragement I needed to polish it and make a version 1.0 for Steam. So here it is, Microlandia, a SimCity Classic-inspired game with parameters from real-life datasets, statistics and research. It also introduces aspects that are conveniently hidden in other games (like homelessness), and my plan is to continue updating, expanding and perfecting the models for an indefinite amount of time.
Dec 2025 · microlandia.city · its alternatives →
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It's free to play on steam, but you'll need a computer with a dedicated graphics card. I just released a new version after first releasing it 18 months ago. It's been a hard slog to scrounge time as it's not my day job but that's life. There's a ton of obvious improvements in the future (weather systems, temperature, varying rainfall, ice/snow, more biomes, more plate tectonics, lava, etc) but all suggestions/feedback is welcome.
2023 · store.steampowered.com · its alternatives →
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Just One Earth▲135We only have one earth. Let's save it. 🌏🔥
2020 · justone.earth · its alternatives →
- 8CG
2016 · corsair-game.net · its alternatives →
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Took a break from the falling sand simulation blog posts this week to work on another small project. It's a little pixel world generator- each time you visit, you'll see a new little world. I really like this stuff and had a blast building it yesterday!
2022 · jason.today · its alternatives →
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Super difficult space strategy (like Plague, Inc.)
2016 · apps.apple.com · its alternatives →
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Skyhill▲65A turn-based survival crafting point-and-click game
2015 · mandragoragames.com · its alternatives →
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Build and manage space outposts on the Moon and Mars in this realistic simulation game. From the first step on the Moon to Mars colonization, launch rockets, take care of your astronauts and expand your base as you explore the cosmos. No grind, just pure management and exploration fun.
2023 · store.steampowered.com · its alternatives →
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This is a little game implemented over a week of tinkering and targeting Emacs. The point is both to have fun with this kind of simulations, and also explore the "functional core / imperative shell" approach to architecture. I also developed a tile and tile effect definition DSL, which makes this even easier to extend. From this point of view it's a success: easy testing, easy extension, Gameplay-wise the simulation is too simplistic, and needs input from people interested in this kind of toys. The original Micropolis/SimSity is the last time I built a virtual city.
Feb 2026 · github.com · its alternatives →
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Free Real-World Intelligence: Give Your AI Real-Time Access to the Physical World. Grassland lets developers give their software an API for accessing real life environments regardless of economic, geographic or political barriers.
2019 · grassland.network · its alternatives →
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Hello everyone! I created a short game in just a few days, just for fun, where you play as an ant and feed it apples This game also features random landscape generation, with clouds and trees arranged in a chaotic pattern across all coordinates. This is what took me the longest time :) I would appreciate your feedback ^ ^
2025 · aanthonymax.github.io · its alternatives →
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Sandbox game focused on building a space station
2015 · store.steampowered.com · its alternatives →
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Jamestown▲71A four player co-op adventure on British Colonial Mars
2015 · jamestownplus.com · its alternatives →
- 20AS
FYI, I try to release something random on the 1st and 15th of every month, this was my latest. you can see my full list of projects on my twitter: https://twitter.com/lisperati/status/1543003744161484800
2022 · dreambookgame.com · its alternatives →
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Swipe decision game, explore, and conquer the galaxy
2024 · play.google.com · its alternatives →
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An offline CLI for turning life goals into quests. Contribute to skorotkiewicz/earth-game development by creating an account on GitHub.
Jul 2026 · github.com · its alternatives →
- 23TE
http://www.terraexgame.com Terra Ex will be a 4x ("explore, expand, exploit, and exterminate") multiplayer online browser based game. Our Kickstarter will begin Oct. 16th (link to KS preview is on our site). We are making this game, in part, to fund STEM education. Details are on our site. About the game (from the site): "Our story begins eons from now, when Earth collides with Mars. Humanity must face an uncertain future: we must forge new civilizations in the far corners of space. Your ships are small at first, but opportunity is endless. Will you become a merchant society or…
2013 · its alternatives →
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I built this with Claude cause I always wanted to tinker with a simulation economoy and I love space themes. A space-economy sim where nothing is scripted. A few hundred autonomous ships each run their own planner. Some chase the best trade route, take a delivery contract, refuel, retrofit at a shipyard, or dock so the crew can rest before morale tanks. Markets price everything off supply with shortage-urgency multipliers, factions tax and subsidize, populations migrate when they're unhappy, and stations that go broke get abandoned and rot. It started as an Elixir/Phoenix prototype, but…
Jul 2026 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →