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ICBM: Escalation - United States of Annihilation | Out Now + 1.1.1 Update and 25th Anniversary

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Published on November 27, 2025

United States of Annihilation is officially out now for $6.99.

Step into a bold alternate history where the United States pursues global dominance from 1949 to 2042, navigating international crises, covert operations, and nuclear escalation across 11 new missions. This DLC also features all-new U.S. unit cosmetics, giving American forces a visual identity tailored to this unique timeline.

Launching alongside the DLC is the massive Update 1.1.1, bringing major improvements, refinements, fixes, and enhancements across the entire game.

CHANGELOG 1.1.1

  • Fixed a crash when loading points distribution file from uncompatible mod

  • Now not dropping the lasting effect if the damage is 0 and only target's missiles are affected

  • Now auto-formatting the mission description text to fit into the description window

  • Fixed the Execute For not saving correctly

  • Fixed the problem with unit unique names being lost on the owner conversion

  • workaround for performance issue when more than 20 army bases try to build a transportation network

  • War Planner now works better with EMP, Cyber and Bio weapon

  • Changed the occupation logic when multiple factions occupy one target, now it counts the total power of the occupying units withing occupation radius

  • Fixed Endless October Mission 7 - enemy units should not spawn too close to the cities anymore

  • Fixed the problem with the new game screen taking too long time to appear

  • Fixed a rare bug with parsing long lines in event files leading to potential problems in scenarios

  • Fixed a bug with switching off the "Group Units On Zoom" setting leaving the ghost icons

  • Fixed a crash related to audio drivers reported wrongly by Windows

  • Fixed a problem with incorrect parsing of "reset" and "delete" statements for unit properties

  • Fixed the problem with naval units "jumping" and desync when having the pathfinding issues

  • Fixed the problem with Experience resetting to 0 after every MP game and rating climbing

  • Fixed a crash when changing parameters in MP lobby when some players have unreadable characters in their names

  • Fixed the problem with enemy units not possible to capture on your territory

  • Fixed a rare problem with aircraft without host airbase being stuck mid-air

  • Fixed a problem with Equalize GDP setting affecting faction GDPs after loading MP game

  • Fixed a bug that can prevent game from starting when Annihilation DLC installed but no Endless October installed

  • Fixed a bug with AI allies becoming hostile when you capture enemy territory where both you and your ally have divisions and your ally had plans to capture this region

  • Fixed the problem in Blitz mode with OTH radars not detecting some missiles

  • AI can now select the best combination of the hosted aircraft and weapon loadout to destroy the defended targets

  • Orders issued by war planner do not stop the game anymore with "order complete" event

  • War planner does not anymore issue attack orders on radar ghost that cannot be attacked

  • Fixed a crash when already destroyed missile tries to draw its trace

  • Event system-related messages are now permanent to avoid being lost while syncing the games

  • Fixed the attack order in events system, to account for the range of non-movable units

  • Fixed a pathfinding problem on the standard water map that was leading to performance issues due to the units not being able to find path

  • Fixed a problem with prioritization of aircraft building

  • Fixed the problem with the AI not considering some units for attack because of the wrong weapon config selected

  • Fixed a rare problem with loading saved game

  • Fixed a crash related to the drawing buffer overflow when there is too many simultaneous nuclear explosions (1000+)

  • Fixed a crash when drawing explosion without images and not DrawWave time

  • Fixed incorrect readiness calculation when several attack orders are queued

  • Fixed dynamic score handling for Achievements

  • Fixed occupation events for Achievements

  • Fixed a crash when loading MP save

  • Fixed Orders Completed event not throwing under some circumstances

  • Fixed incorrect rounding of the mixed integer and float expression in events engine

  • Fixed the alliances created at zero time never converting to permanent alliance

  • Army Bases are not shown in Advanced War Planner Invasion window anymore

  • Fixed the fighters sometimes going suicide

  • Fixed the excessive movements of army divisions in combat

  • Fixed spec-ops teams not auto-attacking enemy assets

  • Fixed some production time glitches

  • Fixed the crash when tuning regions of 1980 map in Russian localization

  • Fixed a crash when loading a mod with corrupted pack file

  • Added United States of Annihilation DLC

  • Added Night Map

  • added the possibility to completely destroy a region

  • added the setting that controls the parameters of region destruction conditions

  • added BlockedAttack faction behaviour

  • added NoSurrender manual faction behaviour

  • EMPs now affect intelligence, research and cyber warfare centers

  • Increased Cyber Warfare AoE to make attacks on 'ghosts' effective

  • Increased the size of Luanda, Angola

  • Added the possibility to define faction-specific tech by faction prefix

  • Besieged units cannot execute orders anymore unless they have a special property

  • Besieged units and cities are now marked more clearly

  • Added the configuration file for the default match settings in different game modes

  • Conquest game mode now defaults to Conquest scoring

  • The AI does not try nuclear "retaliation" based on score with Conquest scoring

  • The AI does not start all-out war by pollution in Conquest scoring

  • Events system now correctly handles ON EACH events with multiple conditions like "event then event"

  • Explosions can now have flashes of different color and duration, also the flash survives the deletion of its explosion

  • Added notification about steam sync in offline mode

  • Pre-places units in scenarios now get updates with the techs selected before the mission

  • Added USE statement to techlevels and production efficiency

  • Buffed SAMs and ASROCs on destroyers

  • Increased baseline ASROC precision

  • Removed AA weapons from ALCM-N loadouts to prevent plane losses on high value missions

  • AWACS units now select different points on patrolling

  • Smoother fading out of the tech and unit detail windows

  • Increased the space for tech description

  • Added the AI considering the no-flight zones

  • Now the units listed in a War Plan can move to the targets if they are out of reach

  • Significantly increased the speed of War Planner handling very big number of units that target cities (like 1000+ silos)

  • Fixed STAT function in the events system now understands the strings as regions and factions

  • Added the Cyber Warfare Center

  • Geneva Convention decisions now require consensus - configurable

  • Added AllowEventsInMultiplayer config setting

  • Added "casualties" event

  • Added weapon activation delay, sensors activation delay and launch hosted delay unit properties

  • Satellites are no more placed randomly as there is now a sensors activation delay

  • Conquest mode now has 5 times slower pollution speed by default

  • Some AI changes

  • Greatly increased the volume of fire for SSGNs, allowing them to destroy targets more easily

  • Added several techs that upgrade the performance of spec-ops teams


To celebrate the 25th Anniversary of Slitherine, we've also released a special Night Map as free content for all players. This new visual option completely changes the atmosphere of the game world and is available right now.

 

 

 

 

Two new bundles are now available:

 

And there’s more on the horizon: the team continues working on the major AI Rework, a long-term upgrade aimed at significantly improving strategic behavior and challenge. Expect new updates and details in January.

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