J.A.C.K.

Spec sheet

Purpose

J.A.C.K. is a level editor for games using Quake-style BSP architecture.Read 2 Oct 2026 · jack.hlfx.ru

Intended users

The editor aims to serve people designing levels for classic games and mods, including Quake and Half-Life.Read 2 Oct 2026 · jack.hlfx.ru

Support

Users can submit error reports and feature requests through the project forums; the software is provided without warranty.Read 2 Oct 2026 · jack.hlfx.ru

Autosave

Users can configure autosave to protect projects from editor crashes or design errors.Read 2 Oct 2026 · jack.hlfx.ru

Development

The maker says J.A.C.K. has been in development since August 2013.Read 2 Oct 2026 · jack.hlfx.ru

Distribution

J.A.C.K. is donationware distributed freely, and the donation amount is up to the user.Read 2 Oct 2026 · jack.hlfx.ru

Downloads

The official download page lists Windows and 32-bit and 64-bit Linux packages.Read 2 Oct 2026 · jack.hlfx.ru

Editing tools

Features include curved surfaces, triangulation, UV-Lock, multiple VisGroups, and automatic selection in 3D views.Read 2 Oct 2026 · jack.hlfx.ru

Extensibility

Plugins can add capabilities such as brush primitives, texture and model formats, and game configurations with import and export formats.Read 2 Oct 2026 · jack.hlfx.ru

Map formats

It can import and export VMF maps, though VMF support is beta and does not include Displacements.Read 2 Oct 2026 · jack.hlfx.ru

Map size

The editor supports levels up to 262144 × 262144 units.Read 2 Oct 2026 · jack.hlfx.ru

Supported games

The editor supports Quake, Half-Life, Quake II, Quake III, and Hexen II.Read 2 Oct 2026 · jack.hlfx.ru

Plans and prices

Every J.A.C.K. plan and price →

Where Specifiction places it

• Game Level Editors#14 of 287.6
• Game Modding Tools#14 of 257.6