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AI War 2

AI War 2

The most devious and acclaimed artificial intelligence in strategy gaming is better than ever. A grand strategy/RTS hybrid that reverses many conventions of both genres. Take territory without attracting attention, build your empire with care, and adapt to an ever-evolving galactic battleground.

Released Oct 22, 2019 Developer Arcen Games Platforms Windows · Mac · Linux 4XGrand StrategyMultiplayerTower DefenseCo-op
View on Steam ↗ $19.99 (US · as of 2026-09-10)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.

87.4%positive1,560 reviews
Recommended · 25 found this helpful

“The apex of multi-threaded, well designed AI combined with a mechanically unique asymmetric guerilla-war RTS. You will not find an experience like AI War 2 anywhere else. Don't worry about having Starcraft-tournament level clicks-per-minute, this RTS focuses more on strategy and…”

— a player, Steam review · 196 hrs played
Recommended · 4 found this helpful

“Absolute masterpiece. My only problem with the game is that I took too long to give it a try and that I just can't ♥♥♥♥♥♥♥ put it down. 11/10 will spend a half hour paused pondering my next move again. and again. and again. and again. Oh and I've barely scratched the surface.…”

— a player, Steam review · 35 hrs played
Recommended · 1 found this helpful

“I sure wish i was smart enough for this game. It's super fun, though!”

— a player, Steam review · 4 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 via SteamCharts.

310all-time peak
0 50 100 2019 2021 2023 2025 63 avg · May 2021

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-05.

255achievements
0.7%median completion
0.3%rarest: We Are The Champions
23.9% of players 17.0% of players 11.0% of players 8.5% of players 6.8% of players 5.2% of players 4.5% of players 3.5% of players 3.1% of players 2.7% of players 2.4% of players 2.2% of players 1.8% of players 1.6% of players 1.5% of players 1.2% of players 1.1% of players 1.0% of players 0.9% of players 0.9% of players 0.9% of players 0.8% of players 0.8% of players 0.8% of players 0.8% of players 0.8% of players 0.8% of players 0.8% of players 0.8% of players 0.8% of players 0.7% of players 0.7% of players 0.7% of players 0.7% of players 0.7% of players 0.7% of players 0.7% of players 0.7% of players 0.6% of players 0.6% of players 0.6% of players 0.6% of players 0.6% of players 0.6% of players 0.6% of players 0.6% of players 0.6% of players 0.5% of players 0.5% of players 0.5% of players 0.5% of players 0.5% of players 0.4% of players 0.4% of players 0.4% of players 0.4% of players 0.4% of players 0.4% of players 0.4% of players 0.4% of players 23.9% 0% most earned rarest
Almost everyone has
23.9%Research Grant — Hack an Advanced Research Station to grant a new ship line.
21.7%Give a Man a Fish... — Spend science to mark up a single Command Station or Battlestation.
21.7%Lots Of Energy — Have 1 million energy.
Rarest badges of honor
0.3%We Are The Champions — Beat the Skirmisher AI on difficulty >= 9.
0.3%I Thought I Was The Protagonist — Beat the Heroic AI on difficulty >= 9.
0.3%And I Thought Snipers Had Long Range — Steal a Chromatic Spire Interplanetary Weapon.

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$19.99current · sampled 2026-09-10 20:53 UTC
$4.99lowest since tracking began2026-07-20
US19.99 USD
EU19.50 EUR
UK16.75 GBP
Australia29.50 AUD
Canada25.99 CAD
Japan2,300 JPY
Brazil59.99 BRL
China76.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$11 Brazil Japan Canada US Australia UK EU≈$23

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-10). Relative comparison only.

$0 $25 $50 07-11 07-23 08-04 08-16 08-29 09-10

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Aug 28, 2026
5.832 Mod Visibility

Full release notes here . More UI polish, and a much more prominent button for how to find mods. All of this is thanks to Badger. Enjoy! 5.832 Changelog General Add "Load and Go" fleet order. This set

Aug 20, 2026
5.829 Abyss Correctness And UI Polish

Full release notes here . Various pieces of polish to the UI, and fixes to the neinzul abyss. All of this is thanks to Badger. Enjoy! 5.829 Changelog Neinzul Abyss Fix some Neinzul Sapper bugs Some mi

Aug 19, 2026
5.828 UI And Command Polish

Full release notes here . Various pieces of polish to the UI and the feedback for issuing commands. All of this is thanks to Badger. Enjoy! 5.828 Changelog General Opening the encyclopedia with only o

Aug 05, 2026
5.827 Additional Tutorials

Full release notes here . Lots of additions, including new tutorials and other improvements to the new-player experience. All of this is thanks to Badger. Enjoy! 5.827 Changelog General Fix some bugs

Jun 30, 2026
5.825 Intel Overhaul: Complete

Full release notes here. The intel menu's overhaul is now complete, and things are much more attractive and informative on that front. Also some forge of empires updates. This was all Badger, and the

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From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Terra Invicta Terra Invicta 82.8% · 6,719 reviews shares 4x, Grand Strategy, Moddable, Economy Old World Old World 84.1% · 4,221 reviews shares 4x, Grand Strategy, Moddable, Economy Breachway Breachway 80.2% · 954 reviews shares 4x, Grand Strategy, Moddable, Military Dune: Spice Wars Dune: Spice Wars 78.7% · 8,233 reviews shares 4x, Grand Strategy, Real Time Tactics, Economy Sins of a Solar Empire®: Rebellion Sins of a Solar Empire®: Rebellion 94.3% · 11,055 reviews shares 4x, Grand Strategy, RTS, Military Distant Worlds: Universe Distant Worlds: Universe 74.4% · 1,499 reviews shares 4x, Real Time, Grand Strategy, Moddable Total War: MEDIEVAL II – Definitive Edition Total War: MEDIEVAL II – Definitive Edition 95.7% · 21,398 reviews shares 4x, Grand Strategy, Moddable, Real Time Tactics Cataclismo Cataclismo 89.0% · 2,361 reviews shares 4x, Grand Strategy, Moddable, Economy

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-12.

GenresIndie, Simulation, Strategy
Player tags4X · Grand Strategy · Multiplayer · Tower Defense · Co-op · RTS · Real Time Tactics · Economy · Management · Military · Sci-fi · Space (SteamSpy community voting)
FeaturesSingle-player · Multi-player · Co-op · Online Co-op · LAN Co-op · Cross-Platform Multiplayer · Steam Achievements · Steam Trading Cards
LanguagesEnglish * *
Achievements255
Official sitehttps://wiki.arcengames.com/index.php?title=AI_War_2:AI_War_2
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS *: Windows 7, 8.1, or 10 64bit Processor: Dual Core 64bit CPU (2.2+ GHz Dual Core CPU or better) Memory: 4 GB RAM Graphics: NVIDIA GTX 510+, Radeon HD5900+, or Intel HD4000+ DirectX: Version 11 Storage: 4 GB available space