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J.A.C.K.

J.A.C.K.

Brand new level editor for games with a Quake-style BSP architecture; a convenient cross-platform tool capable of incorporating the best features of existing editors, such as Valve Hammer Editor, Q3Radiant, and others. J.A.C.K. does aspire to be the universal level design tool for classic games.

Released Dec 15, 2016 Developer Crystice Softworks Platforms Windows · Mac · Linux Game DevelopmentUtilitiesAnimation & ModelingDesign & IllustrationLevel Editor
View on Steam ↗ $14.99 (US · as of 2026-09-25)

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 2026-05-14.

93.3%positive299 reviews
Recommended · 2 found this helpful

“dis gaim maks ME kreit maps! totaali suk.”

— a player, Steam review · 2 hrs played
Recommended · 2 found this helpful

“Been using for GoldSRC games for a while now and it is amazing. Good 10/10”

— a player, Steam review · 505 hrs played
Recommended · 1 found this helpful

“smooth, simple experience. certainly better than hammer editor.”

— a player, Steam review · 24 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-07 via SteamCharts.

33all-time peak
0 10 20 2017 2019 2021 2023 2025 15 avg · Dec 2023

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-19.

18achievements
4.9%median completion
1.8%rarest: Curvature
28.6% of players 25.7% of players 24.6% of players 18.2% of players 12.5% of players 12.2% of players 11.4% of players 8.2% of players 5.9% of players 4.9% of players 4.9% of players 4.0% of players 3.8% of players 3.1% of players 2.7% of players 2.5% of players 2.1% of players 1.8% of players 28.6% 0% most earned rarest
Almost everyone has
28.6%Export Services — Export 100 MAP files.
25.7%Ooops! — Get an "Invalid solid structure" error.
24.6%Clipper — Cut 100 solids using the Clipping Tool.
Rarest badges of honor
1.8%Curvature — Create 250 curves (Quake 3).
2.1%Effectives — Create an effect in Effects Editor (Quake 3).
2.5%Incrementalist — Save 25 incremental versions of a single project.

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-08-12. Steam prices vary by region — always confirm your local price on Steam.

$14.99current · sampled 2026-09-25 21:36 UTC
$14.99lowest since tracking began2026-08-12
US14.99 USD
EU14.99 EUR
UK10.99 GBP
Australia21.50 AUD
Canada16.99 CAD
Japan1,480 JPY
Brazil27.99 BRL
China48.00 CNY

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

Brazil≈$5.4 China Japan Canada UK US Australia EU≈$17

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

$0 $10 $20 08-12 08-21 08-30 09-08 09-16 09-25

Latest official news

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

Jan 05, 2026
Beta update: 1.2.4520

New feature: ignore fit per-axis in Fit Texture dialog. New feature: command filter for shortcut list in Preferences. Improvement: when a node is selected, its index is displayed in Status Bar (Path t

Jul 03, 2025
Beta update: 1.2.4334

New feature: Object Browser (primitives, prefabs). New feature: "dark" color scheme support. New feature: new color scheme "Valve Hammer Editor (Dark)". New feature: configurable keys (shortcuts) in P

Dec 26, 2023
Minor update for 1.1.3773

Fixed a couple of minor issues: - Background image preview not working for Y/Z projection unless re-opening the dialog. - Localization problems of toolbar status tips. - Stale web resource links in th

Dec 24, 2023
J.A.C.K. Update - 1.1.3773

As you likely know, the most recent J.A.C.K. updates and bug fixes have been kept in beta branch for a while. These updates and fixes are only available to those who opted in the beta program. The hol

Apr 12, 2021
J.A.C.K. Update - 1.1.2800

J.A.C.K. editor has been in development for a long time. However, in recent years, all updates and bug fixes were kept in beta status, and were only available to those who opted in the beta program. A

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-14.

GenresAnimation & Modeling, Design & Illustration, Utilities, Game Development
Player tagsGame Development · Utilities · Animation & Modeling · Design & Illustration · Level Editor · Sandbox (SteamSpy community voting)
FeaturesSteam Achievements · Steam Trading Cards · Steam Cloud · Stats · Includes level editor
LanguagesEnglish, Polish, Russian, Ukrainian, Belarusian
Achievements18
Official sitehttp://crystice.com/jack/
Minimum system requirements (PC)

Minimum: OS *: Windows 7 or newer Processor: CPU 1 GHz Memory: 1 GB RAM Graphics: 256 Mb video card Storage: 50 MB available space