
Command swarms of warriors at an unprecedented scale of warfare in this blend of RTS and base-building. Lead ant colonies against the many fearsome threats of the insect world, while building intricate nests, developing pheromone-based tactics, and evolving to meet growing dangers.
Modeled estimate, not a reported figure. How we estimate →
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Forge your empire in the world of ants, building extensive nests and managing an intricate hierarchy in a way that puts the real-time strategy genre under the microscope. Control a variety of warrior ant species in intense battles, command your workers to build and supply an ever-expanding base, and protect your queen at all costs while navigating the unique threats and opportunities of the insect world.

Hundreds of warriors clash in a melee of gnashing mandibles as formic acid artillery fires overhead. Nightfall has come and the last of the workers are rushing back underground, dodging beetles to deliver food to the nest. The stockpile is empty, and without more, reinforcements will not hatch for the ongoing war between the duelling Empires of the Undergrowth.
Starting from a central room hosting your queen, order your workers to develop and optimise your nest – a vast network of store rooms, nurseries, and hallways. Dig through a hex-based maze of soil and bedrock, seeking food and fending off other underground dwellers.
Push beyond the confines of your nest to see what the world above has to offer – with seeds, nectar, fungus, other insects, and even amphibians on the menu, there's plenty to choose from, but each food source comes with its own strategic tradeoffs and challenges. Will you venture forth and fight off the ladybugs that eat and deplete your source of renewable honeydew drops, or do the surrounding nocturnal creatures present too much of a risk for your fledgling colony? Each decision you make has a ripple effect that can doom your colony if you aren’t quick to react to evolving circumstances.
Manage a multitude of species with different attack patterns, natural weapons, and evolutionary paths to tackle the particular dangers of your current biome. Nighttime sorties are at times essential as you look to secure food supplies, though unsuspecting ants might fall prey to the dangers that lurk after sundown. Come morning, you’ll find yourself competing with other ant colonies instead, entering enemy nests to attack their queens while defending your own. Prepare to operate and coordinate simultaneous war efforts across multiple underground and overground maps as your threats and opportunities change with each passing moment – there’s no single path to domination.

Workers scurry in from the surface. Few have returned, but they carry valuable sources of food that will help reinforce the front as a new wave of warriors pour forth from the nurseries, eagerly following the scent of pheromones that tell them where to go and what to do en route. They are the last bastion of the colony, born with a singular purpose – hold the line!
Design and organise multiple nurseries and assign them individual pheromone groups, with each pheromone group taking orders through the placement of pheromone markers, adjustable rules of engagement, and context. Learning to navigate the behaviours of your ants, as well as each species’ strengths and weaknesses, is integral to securing success.
Each pheromone group can be specialised on the fly, told to exclusively collect food, partake in combat, or do both – the right decision can turn the tide of battle. In desperate times, when the colony is starving and new eggs have stopped hatching as a result, will your warrior caste focus on gathering food at the risk of being picked off by aggressive enemies en route? Or will the soldiers divide into escort groups for your remaining workers, ensuring survivability at the cost of overall efficiency elsewhere? Don’t forget to keep at least some workers at the nest to dig, build, and maintain the placement of eggs, to ensure the survival of your ant economy.
Each species of ant presents its own set of strengths and weaknesses on the battlefield. In special game modes where multiple species can be raised in the same colony, your decision to raise and upgrade one or the other will completely change the way you do battle. Trap-jaw ants fight in melee, occasionally leaping back to replenish lost hitpoints. Leafcutter majors fulfil their natural role as protectors by drawing enemy aggression onto themselves to give allied ants an opportunity to flank, regroup, or escape. Wood ants can evolve to fire formic acid as long range artillery or in a more rapid, straight line. Find synergies between the multitude of natural strengths and weaknesses of each species, and prepare to defend against them when warring with rival colonies.
Your enemies are equally varied – apart from other ant colonies, you’ll engage in combat against arachnids, amphibians, crustaceans, and a wide variety of insect species. These powerful and often (comparatively) gigantic creatures present a unique threat to an unprepared colony, and only superior tactics can overcome them. An envelopment manoeuvre can circumvent the adult devil’s coach horse beetle's stunning spray, while tactically isolating and overwhelming hermit crabs one by one will bring their demise faster than they can hunker down to heal.

Victory is certain! Reinforcing troops arrive in the nick of time, fearless in the face of the horrifying abomination before them. Today the sadistic scientist has blended hermit crabs with scorpions into a terrifying new threat, but the colony has evolved wisely after experiencing such unnatural foes before. After a protracted battle the fearsome chimaera teeters on the brink of collapse, but a new foe arrives on the battlefield – piercing through the skies above, the hand of some strange being comes down to crush half the reinforcing troops, and from the great beyond the scientist lets forth an evil cackle. The tide has turned once more…
Apart from the classic RTS skirmishes against the AI and unique seasonal challenges, Empires of the Undergrowth also features a narrative-driven campaign mode. Follow the simultaneous progress of a lab experiment centred around the mysterious Formica ereptor gene-thief ants alongside a documentary series that explores the various species of ants in their natural biomes. Earn resources through successful documentary missions to upgrade your persistent lab colony and evolve according to your preferred playstyle as you put your ants through a multitude of brutal tests conducted in the name of ‘science’ – but not all is as it first seems…
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Hours played at review time, across 126 reviews with recorded playtime.
Reviews
Themes across 125 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
This is just peak gaming, you learn some new stuff about different insects and other bugs how ant colonies work and a bunch of interesting things throughout your experience. What is also funny is as I'm writing this I already have almost 2k hours on it, its just addicting. I hope this will help the game grow to have a larger community to hopefully grow mod development to help the overall experience.
Great concept, but story missions having no save or save-on-quit is baffling. It makes the game unnecessarily hostile to real life interruptions.
this is everything i've wanted in a game for so long. i relied on roblox for ant games and the best one was "Ant War" but this is the game i've been desiring. i get to control whole colony instead of trying to wrangle others in the server. of course, i can't forget the fact that my dad was the one who had spotted this game and gifted me it, i thank him greatly for it. overall i'd say this game is a 9.7/10 and the best thing to play when looking for an insect game.
This is easily one of the best RTS games out there. It really is like controlling an ant colony as the ants do not react to changes in your pheromone markers telling them to go places instantly. Instead, it takes them a few seconds to receive the new message and change course as it would in real life. The system of levels that allow you to experience different species of ants and different scenarios is well implemented. It allows you to master new ants while incentivizing you to do so by rewarding you with resources to build up your main colony, which is put to the test. There are also many degrees of difficulty as well a challenge mode for each level, which adds to how re-playable the game is. After completing the main story on easier difficulties, I am going back and completing each level on the hardest difficulty while doing all of the achievements, which has extended my gameplay by a lot. Truly a well done game.
If it was more of a grand-strategy game with less emphasis on control/resources then it would be great. But as-is it's like playing an RTS that needs micro-managing, except all you can do is give vague suggestions and cross your fingers. * Resources are always tight and non-renewable, but you'll always waste a bunch since you don't have enough control. Your orders only apply to groups and the group could be split across the map. I frequenly had cases where I needed to retreat, but disabling combat would cause half my squad caught up in minor fights elsewhere (on the way to the main waypoint) to also die * You can only given vague orders and it takes a few seconds for it to be followed, but a lot of the time the game seems to want me to sneak around things etc. which requires more control as currently they'll just auto-path where I don't expect etc. Combined with the resources, I lost a few games and gave up because of this * Unnecessary time sinks. Missions take ~1hr and you can't save. Which might be tolerable, except there are events you don't know ahead of time and lots of downtime, so you might play 75% of a mission to then get stomped by a random centipede etc., so you have to repeat it all again
It shows a vast variety of ant species. Play as anything in custom scenarios or take on the main campaign. Nice game if you like the vast reign and mass murder you can cause as a ruler of an ant colony
Pirated this game, then bought it the next day. The studio deserves my money 10/10
Overall a good game. I am roughly halfway through the campaign and I should fairly warn that there are several instakill mechanics which are atypical for most RTS. I haven't decided how I feel about it yet. The campaign isn't a true RTS past "Chapter 2" where it switches a bit more into a puzzle with RTS elements. I am currently playing on hard, there are two higher difficulties which I doubt are enjoyable for 95% of people.
It's well-designed and all, but I didn't expect it to be episodic. Going through scenarios one after another is how this game plays. And the tutorial was a tad bit confusing but I got through it.
Empire of the Undergrowth is a strategy and colony management game where you build and control an ant colony. The game features several ant species, each with unique abilities and behaviors, while also teaching players about how real ants live and interact with their environment. There are multiple game modes to enjoy, including the campaign, skirmish, arena, and a free-play/test mode. The game also offers plenty of challenging achievements, making it a great choice for achievement hunters and players looking for a real challenge. My Opinion: This game made me rage... a lot. But it also gave me plenty of satisfying moments and a huge dopamine rush whenever I completed a difficult challenge. I'm an achievement hunter, so collecting every achievement—even the hardest ones—is my main goal. Overall, if you enjoy base building, troop management, and resource management games, I highly recommend Empire of the Undergrowth. It's challenging, rewarding, and a lot of fun. Rating: 8/10 Tip: Watch tutorials before attempting the more difficult levels, especially if you're going for achievements. They can save you a lot of time, frustration, and failed attempts.
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Trends
Steam followers (game-group members) tracked daily from when we started recording.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Languages: English*, German, Simplified Chinese, Spanish - Spain, Russian, French, Czech, Dutch, Japanese, Korean, Polish, Italian +5 more
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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