Underground Security Inc Demo
Playing now
2+1 vs. yesterday
67%of peak
All-time peak
313 Sep 2026
Playing now
2+1 vs. yesterday
All-time peak
313 Sep 2026
| Published | Kind | Announcement | Build |
|---|---|---|---|
| Game update | Demo Patch v0.4.21 Updating the demo for several bug fixes: · Fixed the behaviour of Ancient Tomes: Hymn to Istar, Tomida Femina · Grand plan on the Mastermind now applies to a maximum of 5 buildings matching the ability description · All "Core" buildings apply 3 stacks of their respective buff matching the building description · Fixed a bug with displaying the priorities of Snake Nests when swapping buildings ·… | — | |
| Game update | Demo Update v0.4.20 An update to the demo addressing some bug fixes: · Fixed a bug with the "Underworld Gathering: Chorus" tome where battlechant was not added properly · FIxed the entrance generation code, where a new entrance with an unreachable path was possible · Fixed a bug where sometimes the cursor would become stuck on certain buttons · Fixed a bug where AWSD panning stopped working on rare instances · Gia… | — | |
| Game update | Demo Patch v0.4.19 Update to the demo with some bug fixes: · Fixed an interaction between moats and tomes that trigger when slow is applied to heroes · Fixed a pathing bug with False Chests where heroes will attempt to reach False Chests that are fully blocked off · Added additional UI feedback for when Exhume and Exhume+ triggers on the Ghoul / Undertaker · Added additional tips for first encountering heroes wit… | — | |
| Game update | Demo Patch v0.4.18 Additional bug fixes for the demo: · Added additional guidance for the tutorial mining task · abandoning runs in game triggers the end game and meta-progression screen · fixed bug where opening the settings while purchasing a tool leads to a soft-lock | — | |
| Game update | Demo Patch v0.4.17 Hotfix to the demo fixing some bugs: · Toggling the pause via space-bar was unreliable · Skipping narrative cut-scenes with space-bar triggered day start · Fixed an entrance generation bug which could result in placed blocking buildings blocking the path to the new entrance | — | |
| Game update | Demo Patch v.0.4.16 A minor patch to the demo to address a few QOL points · Boss and skull scenes can be skipped early with the space bar · Added a randomization option for selecting factions when starting a new game · Fixed some typos | — | |
| Game update | Demo Bug fixes Some bug fixes have been applied to the demo: Bug fixes: · The "Apicius" tome now triggers properly on bosses · Fixed sometimes minions spawn near entrance pillars are not targeted by heroes · Fixed interaction between Overcharge Defenses spell and "Andromache" tome where some buildings are not properly targeted · "Beowulf" tome now provides 2 levels of armored as intended · Fixed bug where Tin… | — | |
| Game update | Demo Balance Update + Bug fixes An update to the rebalancing some of the gameplay elements as well as reworking some of the minion and tome abilities. Minion Ability Changes Some of the minion abilities have been reworked to reduce some of the complexity of the higher rarity minions. Now, on average uncommon minions have 1 - 2 abilities / starting perks, rare minions have 2 abilities / perks while legendary minions have 2 - 3… | — | |
| Game update | Demo Update - Tutorial changes + lighting mode + hero previews A quick update to the demo. Added: · hero party previews: hovering over the preview shows a tooltip for the heroes of the next party so players can better plan for the next wave ahead of time · New lighting modes: moonlight, daylight vs dungeon (classic). Let me know which one is your favorite Changes: · uncompleted task reset: at the start of the night phase, instead of losing all progress tow… | — | |
| Game update | Demo Balance Patch Small balance patch for the demo · Boss difficulty scaled down - we were finding new players were struggling with the difficulty spike a bit too much · Emerald ore cost: 3 -> 2 - unfortunately, this means if you update the client while having an active save, there may be a bit of weirdness where existing ores will have the old cost, while newly spawned ores will have the new cost · Rain of arro… | — | |
| Game update | Hotfixes for Demo Hotfix to bugs: · Black texture on walls · Shadow Mage + transformation ability leading to infinite minions · Outbreak plague effects affecting subsequent runs · Visual bug selecting the gate in combat · Minions not being alerted after taking damage from Summoned Drone Automaton Balance Changes: · Ice Crystal, Slime Crystal, Lightning Crystal, Flame Crystal base damage: 5 -> 10 · Increased diff… | — |
Announcements are the developer’s own posts to the game’s Steam news feed: updates and their patch notes, in-game events, releases and sales. The important ones are marked on the players chart.