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Demo Patch v0.4.20 · Underground Security Inc Demo · SteamPeaks

Underground Security Inc DemoEventsDemo Patch v0.4.20

Game update

Demo Patch v0.4.20

Underground Security Inc Demo · published 11 Sep 2026, 17:59 UTC

All events Players around this date Read on Steam

Quick hotfix to the demo fixing a bug with the Shadow Mage where the dark synergy was trigger on assign and past the normal 3 ability cap.

More from Underground Security Inc Demo

Other announcements

Underground Security IGame update22 Aug 2026Demo Patch v0.4.24A quick update to the demo to fix a few bugs · Modified the logic for Tomida Femina so that it no longer tries to draw past your hand size · Fixed a bug where Book of Riches Volume 3 does not trigger · Fixed an issue where restarting the day while in a tutorial screen disables tooltips temporarily Underground Security IGame update10 Aug 2026Demo Patch v0.4.23Demo patch fixing some bug fixes: · Fixed a bug where minions could be dragged from the crypt and deck could allow the minion to be deployed or assigned into the dungeon · Fixed an issue, where opening the settings menu on controller can lead to a soft-lock while in the tutorial Underground Security IGame update8 Aug 2026Demo Patch v0.4.21Updating 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 ·…