Steam app 463530 · updated 03 Nov 2026, 11:17 UTC
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.
718 hourly samples, with the daily peak drawn over them. Weekends are shaded.
116 months, April 2017 to November 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
23 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
30 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 568 hourly samples from 08 Oct, which is as far back as the source keeps every hour. Weekends are shaded.
7 days as the curve, each the highest figure that day. Behind it, 150 hourly samples. Each dip is a night. Weekends are shaded.
| Language | Full audio |
|---|---|
| English | ● |
| German | |
| Simplified Chinese | |
| Spanish - Spain | |
| Russian | |
| French | |
| Czech | |
| Dutch | |
| Japanese | |
| Korean | |
| Polish | |
| Italian | |
| Hungarian | |
| Traditional Chinese | |
| Turkish | |
| Ukrainian | |
| Portuguese - Brazil |
A blank audio cell means full audio was not marked in the returned language list.
186 achievements in total.
50 developer announcements, Mar 2025 to Nov 2026 · times in UTC
We've just released another small patch to fix a few minor issues here and there in the wake of the SWAMPED! Update, and one or two minor visual changes. They are listed below: FixesFixed a crash that could occur when saving related to…
Patch notesI'm not sure if this is the first time we've put up a newsletter exactly on Halloween - but anyway, happy spooky season! Welcome to all of our new players - a lot of you have joined us recently from the midweek deal we had on Steam, and…
MikeThank you to everyone who has been providing bug and crash reports since the release of the SWAMPED! update on Monday. We've gone through and fixed the most pressing issues and have made one or two small changes in today's patch.Patch…
Patch notesEmpires of the Undergrowth is now 75% off during its Steam Midweek Deal! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using unique…
Patrick (HoodedHorse)We thought it was about time our swamp environment had a little TLC, so it's time to head back to the wetlands. Get utterly swamped in a new custom game map - Creek - and two new creatures, the rough green snake Opheodrys aestivus and the…
MikeWe've updated the currently-running optional beta to v1.2.1.1.0.3. If you'd like to participate but haven't yet, the instructions on how to do so are in the previous beta post (the password is theswampedbeta).Patch NotesBalanceIncreased…
MikeIt's time for an optional beta! This time, we're giving a little bit of TLC to the swamp environment with two new swamp creatures - the rough green snake Opheodrys aestivus, and the adult form of the eastern newt Notophthalmus viridescens.…
MikeEmpires of the Undergrowth is now 70% off during the Hooded Horse Autumn Publisher Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony…
Patrick (HoodedHorse)For the landmark 20th episode of the Empires of the Undergrowth vlog, we go over the changes that are coming to freeplay setup saving - including fun ways that saves can be edited for a bunch of different effects! We also discuss the…
MikeEmpires of the Undergrowth is now 70% off during the Hooded Horse August Publisher Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony…
Patrick (HoodedHorse)Ah, summer. A time for growth, frivolity…. and oppressive heat. It’s also a time for optional betas in Empires of the Undergrowth, so that’ll be the main topic of this July newsletter. I’d better finish writing it before my office gets…
MikeEmpires of the Undergrowth is now 70% off during the Hooded Horse July Publisher Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using…
Patrick (HoodedHorse)Empires of the Undergrowth is now 70% off during the Hooded Horse Summer Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using unique…
Patrick (HoodedHorse)It's been a little while, but it's time for a vlog! In it, community manager Mike goes over the recent Beach Brawl Update and also reviews the roadmap that was published in the previous newsletter. Note that this vlog also includes a…
MikeWhile you were perfecting your terrariums and running experiments in Empires of the Undergrowth, the dev team was working tirelessly to release the major Beach Brawl Update. Thanks to lots of help from players who tested and gave feedback…
Patrick (HoodedHorse)Empires of the Undergrowth is now 70% off during the Hooded Horse May Publisher Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using…
Patrick (HoodedHorse)The Beach Brawl Update is here! Free to all owners of the game, this update brings the fearsome shore crab and sand lizard - two huge creatures for the beach environments. Thank you so much to everyone who has helped us test out this update…
MikeThe latest round of fixes and changes bring us ever closer to getting this update out for everyone. This update includes some minor changes to save games - please let us know in the discussions or on the Discord if this causes any issues.…
MikeEmpires of the Undergrowth is now 70% off as part of the Hooded Horse April Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using…
Patrick (HoodedHorse)Time for another update to the currently-running optional beta! We've been following your feedback both here on Steam and on our Discord - which has been super active recently with the new content. Come and join us! For any Windows users…
MikeWe have (finally!) released our optional beta for the Beach Brawl update for everyone. Thank you so much to everyone who has been testing this out! We’ve been gathering mountains of feedback and working through the list of issues that have…
MikeThank you for all the excellent feedback over the last few days for the Beach Brawl beta! Our Discord has been a hive of activity over the last few days, and I've been working late into the night to log all the reports and reply to all you…
MikeIt's been a long time coming, but it's time to test out the Beach Brawl update! The beta is available on Windows (not Mac at this time), and we'd love to hear your feedback on the changes made. The largest and most obvious change is to the…
MikeEmpires of the Undergrowth is now 70% off as part of the Hooded Horse Spring Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using…
Patrick (HoodedHorse)Empires of the Undergrowth is now 70% off as part of the Hooded Horse Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using…
Matt (Hooded Horse)Time for some info about the next maps and monsters to come to Empires of the Undergrowth! Community manager Mike goes over the changes to the user interface, controller support, and the additions of two new maps and two new critters that…
MikeIt’s time for the first newsletter of 2026. We’d like to offer a warm welcome to everyone who’s joined us recently in the Steam and Hooded Horse sales over the holiday period, and introduce you to how we do our newsletters and vlogs! These…
MikeEmpires of the Undergrowth is now 70% off as part of the Hooded Horse January Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your…
Matt (Hooded Horse)Empires of the Undergrowth is now 70% off as part of the Hooded Horse Winter Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony…
Auverin (Hooded Horse)As we head towards a new DLC, community manager Mike shows some of the UI changes coming to the game and talks about why certain things aren't in Empires of the Undergrowth. Also of note (and highlighted in the vlog), on the day of posting…
MikeEmpires of the Undergrowth is now 50% off as part of the Hooded Horse November Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your…
Matt (Hooded Horse)Hello everyone, The 2025 Steam Awards have begun! Nominations are open, and we’re hoping you’ll support Empires of the Undergrowth by nominating it in the Labor of Love category. If you’ve been keeping up with our development updates, you…
Auverin (Hooded Horse)As our autumn quickly deepens and the leaves brown, it's time for a summary of what the Empires of the Undergrowth team have been working on recently. As is always the case, the newsletters work in tandem with the roughly bi-monthly vlogs.…
MikeEmpires of the Undergrowth is now 50% off as part of the Hooded Horse October Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your…
MattEmpires of the Undergrowth is now 50% off as part of the Hooded Horse Autumn Publisher Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony…
MattA review of the recently-updated roadmap from Empires of the Undergrowth from community manager Mike. Also includes a little light macrophotography for those who enjoy such things! If you'd like to see the roadmap graphic yourself, just…
MikeEmpires of the Undergrowth is now 50% off as part of the Hooded Horse August Sale! Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony, using…
Auverin (Hooded Horse)As is tradition for Empires of the Undergrowth, it has now exceeded six months since the last roadmap update, and so it is time for a new one. This newsletter will go over what the team has been working on recently, by taking a detailed…
MikeIn a shakeup of the vlog format, community manager Mike (creatively freed by being allowed to dedicated this vlog solely to EotU) again touches lots of grass and goes over upcoming changes to Empires of the Undergrowth, while also doing his…
MikeEmpires of the Undergrowth is part of the Steam Summer Sale at 50% off, with the DLC also discounted. Check it and other games out in the Hooded Horse Summer Sale. Down below is a recap of recent development updates, including remastered…
Matt (Hooded Horse)This patch is the full release of what we’ve been testing in the optional beta - thank you very much to everyone who has provided feedback over the last few weeks on that. It makes several changes and fixes to various things that cropped up…
MikeNOTE: This optional beta has now ended and the live build has superseded it. V1.1010742 fixes a pesky unreachable leaf that was an achievement block, as well as making exploding creatures more effective against very large enemies and…
MikeEmpires of the Undergrowth is now 50% off as part of the Hooded Horse May Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony…
Matt (Hooded Horse)It’s time to do one of our bi-monthly newsletters. For those who have recently joined us, welcome! We do newsletters and vlogs on alternate months, and since April had a vlog (where I actually went outside) May gets a newsletter. Everything…
MikeAn optional beta is currently available for all Mac & Windows Steam users of Empires of the Undergrowth. This one sees some significant optimisations designed to aid texture streaming and other processes, fixes issues with Bomb Mode and the…
MikeAt least one of us decided to touch grass - an update on how things are going and where we think we're going next! Since this is also a general Slug Disco update as well as an Empires of the Undergrowth one, there is a section at the…
MikeThis small patch deals with some issues from the 1.1 update that arrived yesterday. There are more fixes on the way soon but these deal with the most pressing ones, so we're getting these out first. Fixes - General Fixed an issue with…
Patch notesEmpires of the Undergrowth 1.1 is out now! A major remastering of many art assets including the rainforest environment, leafcutter ants, black ants, and gene thief ants is included for all owners of the game. Many changes and fixes are also…
MikeEmpires of the Undergrowth is now 50% off as part of the Hooded Horse Spring Publisher Sale. Command an ant colony and wage strategic battles in the insect kingdom. This ant-based RTS challenges you to build, defend, and expand your colony…
Matt (Hooded Horse)Thank you all for the amazing response to the new beta with the remastered artwork! We’ve had a bunch of feedback and have been able to fix the majority of the problems for the time being. Please see below for full patch notes. The beta is…
MikeEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Empires of the Undergrowth - Supporter Pack | WindowsmacOS | 24 Mar 2025 |
| Empires of the Undergrowth - Exploding Ants | WindowsmacOS | 24 Mar 2025 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Empires of the Undergrowth with DirectX 11 | EotU.exe | -DX11 | windows | |
| Launch | EotU.app | macos | ||
| Empires of the Undergrowth with Vulkan (experimental) | EotU.sh | -vulkan | linux | |
| Empires of the Undergrowth with OpenGL 3 | EotU.sh | -opengl3 | linux | |
| Empires of the Undergrowth with OpenGL 4 | EotU.sh | -opengl4 | linux |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocal | EotU/Saved/SaveGames | *.sav |
It runs on public data and somebody's spare time.
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