Intelligent Design: An Evolutionary Sandbox

Intelligent Design: An Evolutionary Sandbox

Released May 2017

Polygons eating polygons eating polygons. An evolution sandbox where the genetics really are simulated. Seed a world, walk away, and come back to species neither of us designed. Watch populations boom, bust and go extinct. Best left on a second monitor.

44% positive · 149 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence

Where to buy

Steam $6.99
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Evaluation

Intelligent Design: An Evolutionary Sandbox launched on May 12, 2017 and received one substantial post-launch content update: the Genetically Modified Update on September 28, 2018, which added a new map, completely reworked controls, a new genetics UI, and major performance improvements. That appears to be the last major content release for the game itself. Since then, Pill Bug Interactive has shifted focus to new projects. By late 2018, the studio moved on to other games — Cycle 28, Making it Home (released September 3, 2021), Captain Contraption's Chocolate Factory (released July 20, 2024), and now Captain Contraption's Safari Park, which was announced in December 2025 and January 2026 as their next game, described explicitly as a spiritual successor to Intelligent Design. The developer applied a security hotfix on October 19, 2025, showing they still maintain the game at a basic level, but this is purely maintenance — no new content. The January 27, 2026 post listing all their games for sale treats Intelligent Design as part of their back catalogue alongside their completed titles, with no mention of any forthcoming updates. There are no unreleased DLC listings, no roadmap commitments, and no developer statements suggesting further content is planned for Intelligent Design. The studio's creative energy is clearly directed at their new Safari Park game. The game launched as a complete product and received one major content update before the developer moved on.
Evidence
Developer announces their next game, Captain Contraption's Safari Park, describing it as a spiritual successor to Intelligent Design — signalling that Intelligent Design itself is a completed, prior work.
news post · Jan 7, 2026 source development ending
high
The Genetically Modified Update released — the last major content addition for the game, adding a new map, reworked controls, a new genetics UI, and performance improvements.
news post · Sep 28, 2018 source content shipped
high

Media

Details

Publisher
Pill Bug Interactive
Achievements
12
Platform
Windows, macOS, Linux
Controller
—
Steam Deck
Not rated
Players
Single-player

About this game

In a universe driven by targets, a faceless corporation has employed you to create an evolving ecosystem you will never control.

Intelligent Design: An Evolutionary Sandbox is a god game with fully simulated genetics and evolution. Create species of plants, herbivores and carnivores, release them into a world, and then find out what evolution does with them.

Evolution isn’t just a mechanic. It’s a simulation.

Every organism's behaviour comes out of its genes. How tall will a plant grow? How fast can a herbivore run? How often does a carnivore go looking for prey? Those genes pass down generation after generation with random mutations, and there is nothing underneath them but the simulation. No tricks, no statistical approximations, no scripted events waiting to fire. Leave a world running long enough and species will speciate, boom, crash and go extinct without you touching anything

You will spend a lot of time watching... which is the point.

This is a slow simulation. Populations take generations to change. Your role is to seed a world, change something small, and come back later and see what happened. One of our players leaves it open on a second monitor during work, I leave it on my TV while I’m cooking. If you’re looking for objectives, scores and explosions this is not that kind of game (but we do make those).

Genetically modifying creatures and crops have real consequences.

You can engineer the genetics of organisms directly, but you should do that carefully, because once a genome is loose in your ecosystem it is very hard to control. And do you even know what those genes do? Getting a food chain to balance is satisfying. Watching that same food chain collapse in 2 minutes because you made the equivalent of a spelling mistake is, we’d argue, even more satisfying.

Before you buy

This is for you if: you have heard of SimLife, SimEarth, Creatures or Framsticks; you find a population graph more interesting than a quest marker; you are happy leaving a simulation running while you do something else.

This is probably not for you if: you want goals, a story or a win screen; you want something to happen in the first ten minutes; you want the game to tell you what its numbers mean. One of our own players put it in capitals “THIS IS NOT A QUICK GAME DON'T EXPECT STUFF TO HAPPEN FAST” a positive review)

Who made this

Pill Bug Interactive is two people in Wales, Sean and Dave. We have been making games about systems that misbehave when you leave them alone for the best part of a decade, and we were nominated for a BAFTA Cymru along the way.

No Generative AI was used in this game. We pay humans for art and music.

Last evaluated Jun 27, 2026
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