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Empires of the Undergrowth News

Fixes - V1.101073

This 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.

[h2]Fixes - General[/h2]

  • Fixed an issue with charge abilities (ie, driver ants and big-headed ants) not working in Battle Arena
  • Fixed ants with garbled textures on Beetles Rise Up! extra level and Hungry Spider seasonal level
  • Fixed glow position on the leafcutter supermajor (Adventure extra level)
  • Altered several assets to optimise texture streaming

[h2]Fixes - Exploding Ants DLC[/h2]

  • Fixed a hang / crash that occurred when expIoding termite colonies were added to custom games
  • Rapid Maturity & Accelerated Gland Filling now correctly update exploding termite worker visuals when they become explosive & fully powered
  • Fixed termite mound not appearing on No Ant's Land extra level
  • Fixed exploding ant worker and queen descriptions
  • No Ant's Land extra level now uses termite voice lines
  • Exploding termite workers now have access to the lignocellulose digestion toggle if in a Macrotermes colony
  • Mulch on No Ant's Land extra level can now be harvested up to 45 at a time (depending on the harvester)
  • Fixed an issue where new creatures were not changing the mouse cursor to the build tool
  • Changed exploding termite soldier to melee class to match other UI elements



Empires of the Undergrowth 1.1 - Art Remaster, Exploding Ants DLC - OUT NOW

Empires 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 included - full details are included in the patch notes below.

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Releasing simultaneously is the Exploding Ants DLC, which adds the exploding ants (Colobopsis explodens) and exploding termites (Neocapritermes taracua) to the mix. These are based on real-life species that really do rupture their bodies in an act of self-sacrifice for their colony! Nature is endlessly inventive.

Finally, the Supporter Pack is also releasing today and is now available separately.

[h3]Leave a Review, Fuel the Swarm[/h3][hr][/hr]If you've been enjoying 1.1 — or even if you've just got thoughts on exploding termites—we’d love to hear your feedback in a Steam review. They’re not just a boost to visibility; they help us understand what’s working and what needs more love. Thanks for being part of the colony!

Empires of the Undergrowth 1.1


[h2]Rainforest Art Remaster[/h2]
The following rainforest levels have been remastered:
  • 3.1 The Harvest
  • 3.2 Front Line
  • Custom game map Basin
  • Custom game map Embankment

[h2]Creature Art Remaster[/h2]
The following ant species have been remastered:
  • Leafcutter ants - queen, majors, mediae, minors, minims
  • Gene thief ants - queen, workers
  • Black ants - workers, soldiers

[h2]Improved Creature Animations[/h2]
The following rainforest creatures have had improved animations:
  • Leaf mimic praying mantis
  • Jumping spider
  • Trapjaw ant

[h2]Fixes & Changes[/h2]
  • Pillage the Pillagers achievement can now be attained
  • Fixed Matabele medics getting stuck if their heal target is removed from play
  • Queens can no longer be picked up by larger creatures
  • Fixed a termite mound issue in Drive Them Back (Custom Game Version)
  • Fixed a texture chamber issue on old beach tile set
  • A voice line referencing ants will no longer play if the player is a termite colony
  • Prevented lignocellulose spawning in termite mound walls in custom games
  • AI colonies in custom games will no longer harass colonies that are dead / missing their queen
  • Seasonal hats will now appear in the right place on Matabele & termite queens
  • Added a failsafe to a possible crash involving phorid flies
  • Fixed player’s army ants counting towards objectives in Adventure in remix mode
  • Some lighting corrections in Drive Them Back (Custom Game Version)
  • Fixed All The Heals achievement failing on hard difficulty due to starting soldier tiles
  • Fixed a crash relating to the American bullfrog
  • Fixed mulch landmarks always being on the map with pre-set landmarks even when no Matabele or termites are in play
  • Fix for Full House achievement issues
  • Some grammar / spelling fixes here and there
The Exploding Ants DLC - Headline Features


The Exploding Ants DLC is now available from the Steam store. It includes not just exploding ants, but exploding termites as well! Both perform a remarkable function called Autothysis which can be toggled on and off like climbing and aphid collection. Once you have the DLC installed, the following features will be available to you:

[h2]Exploding Ants - Colobopsis explodens[/h2]

Exploding ant soldiers are available as unlockable units in ereptor colonies. When threatened, they explode causing high damage and a concussive blast. As part of an ereptor colony, the exploding ant soldiers have the following upgrades available:
  • A choice of Controlled Blast or Violent Blast, increasing the damage or radius of the explosion, respectively
  • A choice of Chain Reaction or Persistent Secretions, increasing the damage of other exploding ants caught in the blast or leaving a pool of liquid that causes continual damage, respectively

Explodings ants are available as full colonies in custom games, remix mode and the extra level The Harvest - Firebreak:
  • Colobopsis explodens majors do not explode, but take less damage from the front and have an underground-only ability. They will go stationary, and buff the armour of allied units around them

In The Harvest - Firebreak, exploding ants must eliminate an aggressive fire ant colony against the backdrop of two leafcutter ants bringing in their harvest. Find it in the Extra Levels section of the Arcade.

[h2]Exploding Termites - Neocapritermes taracua[/h2]

Exploding termite workers are available as unlockable units in ereptor colonies. When threatened, they explode causing damage over time and confusion to enemies.
  • Since they are workers, they will perform nest jobs as usual
  • Workers are born inert but become explosive after a time, indicated by a change to their UI icon
  • The older the worker is before it explodes, the more damage over time and the longer the confusion effect will be

As part of an ereptor colony, the exploding ant workers have the following upgrades available:
  • A choice of Rapid Maturity or Accelerated Gland Filling, which reduces the time until they become explosive or speeds up the damage over time and confusion increase, respectively
  • A choice of Extreme Toxins or Extreme Confusion, which increases the length of the damage over time or the confusion effect, respectively

Exploding termites are available as full colonies in custom games, remix mode and the extra level Front Line - No Ant’s Land:
  • Neocapritermes taracua majors do not explode, but they have a dual ability called Asymmetric Snapping. Underground, this ability causes high damage to enemies. Above ground, it will sun an enemy and cause the termite itself to be flung back
  • Exploding termites consume lignocellulose in a similar way to African termites, but they do not require the steps to process it into fungus and instead consume it directly

In Front Line - No Ant’s Land, a small colony of exploding termites must survive a number of days against the approaching lines of army ants. Find it in the Extra Levels section of the Arcade.

DLC - Supporter Pack


The Supporter Pack does not add anything that affects gameplay, but is intended for those who have expressed that they missed out on the original funding campaign way back in 2016. It includes the following items:
  • Myrmecia ereptor gene thief skin - new models and animations for the gene thief ants. Includes both queen and worker models. Inspired by real-life bull ants (Myrmecia genus)
  • Original Soundtrack - the Empires of the Undergrowth soundtrack, 170 minutes presented in 35 separate tracks and downloadable as uncompressed WAV files
  • Sounds of the Undergrowth widget to listen to the music and voice-lines in-game, with adjustable sliders for intensity
  • 7 4k wallpapers with multiple variations for a total of 16 wallpapers
  • 19 emojis, with some based on the game’s achievement icons
  • 12 portraits


We hope you enjoy the update! This release completes a large swathe of our current roadmap, and puts a dent in the rest of it. So, go and marvel at the beauty of the jungle, and blow it up with exploding creatures!

Save 50% on Empires of the Undergrowth

Empires 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, using unique pheromone-based strategies and powerful warrior ants to overcome formidable foes.

Hooded Horse Spring Publisher Sale 2025

https://store.steampowered.com/app/463530/Empires_of_the_Undergrowth/

Optional Beta Updated - Fixes

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 now available on Mac.

If you didn’t join last time and would like to, see the previous post for details on how to activate the beta. The password for the beta is rainforestrefresh.

As before, any feedback you can provide on any errors or crashes, etc is much appreciated - please post on the Steam discussions for that.

[h2]Fixes & Changes[/h2]
  • Fixed inaccessible leaves in several levels
  • Fixed climbable plants & stuck aphids in Basin
  • Fixed decorative water clipping through the ground in Basin
  • Fixed black ants and trapjaw ants carrying things in the wrong place
  • Fixed behaviour toggles not appearing in the formicarium when appropriate
  • Fixed leafcutter mediae & majors not getting larger with level
  • Fixed references to DLC creatures appearing where they shouldn’t
  • Repositioned the glow effect on the leafcutter supermajor (Adventure extra level)
  • Fixed messed up textures on starting workers in the tutorial & formicarium levels
  • Fixed messed up textures on royal guard in Enemy of my Enemy 1 & 2
  • Fixed some rainforest decorative plant model issues
  • Removed a hexagonal dev tool graphic that was accidentally left in some levels
  • Fixed the defeat cinematic animation in 3.1 The Harvest
  • Level select now uses the new black ant worker model
  • Latest localisations added
  • Added Mac build to beta


[h2]KNOWN ISSUES[/h2]

Blurry textures on creatures and scenery - some users are having issues with the new environments and models, with a blurry look to the materials which is caused by texture streaming.

We intend to review this fully, but for now you can try disabling texture streaming on Steam by adding the following launch argument to the game: -NOTEXTURESTREAMING. To do this, find the game in Steam, go to Properties > Set Launch Options > … and paste in -NOTEXTURESTREAMING (make sure you include the dash). This is not guaranteed to fix the issue but testing shows it helps.

If you decide to do this, loading times may be affected and you might find that you need to drop texture quality somewhat from the in-game graphics menu.

Game stays running after closing for some users - we’ve narrowed the cause of this down - it affects AMD users but fixing it involves some deep engine changes and we don’t think it’s wise to be making the change so close to a major release. Please continue to report if you have the issue, as other changes have been made which may impact this.

Built-in crash reporter does not seem to currently appear reliably after a crash - please let us know if you get a crash without a box popping up referring to sending in a report.

Optional Beta - Artwork Remaster, Fixes & Changes

An optional beta is now available for all Steam Windows users of Empires of the Undergrowth. We’ve had a very large graphical overhaul of several parts of the game - most notably the rainforest environment, leafcutter ants, ereptor ants, black ants, and others. Some creatures have had animation improvements. We’ve also fixed (we think!) a long-standing problem with the Pillage the Pillagers achievement and several others.

Remastered rainforest environment, level 3.2 Front Line

Any feedback you can provide on any errors or crashes, etc is much appreciated - please post on the Steam discussions for that.

Code: rainforestrefresh


If you would like to join the beta, the code is rainforestrefresh. If you don’t know how to join a beta and would like to, follow the instructions below:

  1. Find Empires of the Undergrowth in your Steam library, right-click on it and choose "Properties"
  2. Choose the "Betas" tab
  3. In the box titled "Enter beta access code to unlock private betas", enter rainforestrefresh
  4. After the "Access code correct" information appears, make sure you've chosen "Open beta" from the "Select the beta you would like to opt into" drop-down menu
  5. Press close - the game will now update to the beta branch.


New Formica ereptor models

[h2]Headline Features[/h2]
  • Rainforest environment remastered in the following levels:
    • The Harvest
    • Front Line
    • Embankment
    • Basin
  • Full remastering for several ant species, which are:
    • Leafcutter ants
    • Gene thief ants
    • Black ants (workers & soldiers)
  • New animations for several rainforest creatures:
    • Jumping spider
    • Leaf mimic praying mantis
    • Trapjaw ant

[h2]Changes[/h2]
  • Added new custom game AI temperament - ‘hostile’
  • Added new custom game reaction speed - ‘quick’
    • Aim with both of these is to create a smaller gap between moderate & aggressive
  • AI hard preset changed to quick instead of fast & extreme set to hostile & quick
  • Increased check rate of custom game objectives
  • Battle Arena & Creature Spawner spider icons will change to question marks if arachnophobia mode is on
  • Colony creatures collected for treatment will now lose any food value (termites)
  • Colony creatures collected for food will no longer be able to be treated (termites)
  • Many localisation updates
  • UI icon updates in many places


Embankment & Basin custom game levels with the new artwork

[h2]Fixes[/h2]
  • Pillage the Pillagers achievement can now be attained
  • Fixed Matabele medics getting stuck if their heal target is removed from play
  • Queens can no longer be picked up by larger creatures
  • Fixed a termite mound issue in Drive Them Back (Custom Game Version)
  • Fixed a texture chamber issue on old beach tile set
  • A voice line referencing ants will no longer play if the player is a termite colony
  • Prevented lignocellulose spawning in termite mound walls in custom games
  • Seasonal hats will now appear in the right place on Matabele & termite queens
  • Added a failsafe to a possible crash involving phorid flies
  • Fixed player’s army ants counting towards objectives in Adventure in remix mode
  • Some lighting corrections in Drive Them Back (Custom Game Version)
  • Fixed All The Heals achievement failing on hard difficulty due to starting soldier tiles
  • Fixed a crash relating to the American bullfrog
  • Fixed mulch landmarks always being on the map with pre-set landmarks even when no Matabele or termites are in play
  • Possible fix for Full House achievement issues
  • Some grammar / spelling fixes here and there
  • AI colonies in custom games will no longer harass colonies that are dead / missing their queen

[h2]KNOWN ISSUES[/h2]

Game stays running after closing for some users - we’ve narrowed the cause of this down - it affects AMD users but fixing it involves some deep engine changes and we don’t think it’s wise to be making the change so close to a major release. Please continue to report if you have the issue, as other changes have been made which may impact this.

Built-in crash reporter does not seem to currently appear reliably after a crash - please let us know if you get a crash without a box popping up referring to sending in a report.