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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 ↗ $4.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

88.5%positive1,490 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 count fetched 2026-07-11 12:43 UTC · history via SteamCharts.

16playing at last check
1924-hour peak
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 2026-07-25.

255achievements
0.7%median completion
0.3%rarest: We Are The Champions
23.8% of players 16.9% of players 11.0% of players 8.4% of players 6.7% of players 5.2% of players 4.5% of players 3.5% of players 3.1% of players 2.7% of players 2.3% 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 0.7% 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 0.7% 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 23.8% 0% most earned rarest
Almost everyone has
23.8%Research Grant — Hack an Advanced Research Station to grant a new ship line.
21.7%Lots Of Energy — Have 1 million energy.
21.6%Give a Man a Fish... — Spend science to mark up a single Command Station or Battlestation.
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%Showdown Win — Win with the showdown device enabled.

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.

$4.99−75% right nowcurrent · sampled 2026-07-26 08:39 UTC
$19.99base price
$4.99lowest since tracking began2026-07-20
US4.99 USD−75%
EU4.87 EUR−75%
UK4.18 GBP−75%
Australia7.37 AUD−75%
Canada6.49 CAD−75%
Japan575 JPY−75%
Brazil14.99 BRL−75%
China19.00 CNY−75%

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

China≈$2.8 Brazil Japan Canada US Australia EU UK≈$5.6

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $25 $50 07-11 07-14 07-17 07-20 07-23 07-26

Latest official news

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

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

Jun 26, 2026
5.824 Teardown Hygiene

Full release notes here. I got some logs from players right after releasing the prior build, and based on their logs, there were two more classes of bugfix that I was able to resolve. Those are now ou

Jun 25, 2026
5.823 Multiplayer Lanes

Full release notes here. Okay, the multiplayer changes in this one were... intense to find. The good news is that I had some confirmation from at least one group that things were working great for the

Jun 24, 2026
5.822 Beautified Intel

Full release notes here. The intel menu is a lot prettier and easier to read, plus MP fixes. The intel menu improvements are not to be overlooked -- Badger has really gone all-out with them. They're u

Jun 22, 2026
5.821 Engineering 501

Full release notes here. Multiplayer improvements, and other fixes. 5.821 Changelog Bugfixes Fixed a missing nullref guard from the galaxy map display mode for net metal, which could cause exceptions

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

Old World Old World 84.1% · 4,221 reviews shares 4x, Grand Strategy, Moddable, Economy 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 Terra Invicta Terra Invicta 82.8% · 6,719 reviews shares 4x, Grand Strategy, Moddable, Economy 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 Breachway Breachway 80.2% · 954 reviews shares 4x, Grand Strategy, Moddable, Military Men of War™ Men of War™ 85.9% · 1,446 reviews shares Real Time, Moddable, Real Time Tactics, RTS Supreme Commander 2 Supreme Commander 2 87.2% · 7,775 reviews shares Real Time, Grand Strategy, RTS, Military

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

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
Estimated owners200,000 – 500,000 (SteamSpy)
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