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optimised for mobile processors (developed on Snapdragon 8CX / Adreno / OpenGL 3.3 Core Profile)

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Latest release is 1.2.6.51 M3 for Windows, macOS and Linux | changelog

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Getting started & Basic Navigation - Begin here

Basic-concept: Brushes - the fundamental building blocks of a level

Entities (Things) - Monsters, Weapons, Lights & Speakers

Triggers & The I/O Logic System - make stuff happen in a level

Logic Graph Editor - Visual Scripting system

Asset Browser - Textures and Models

Property editor - Settings & Flags

System Monitor - Frame times & frustum culling

Map Format - structured plain UTF-8 JSON files

Renderer Technical overview - Architecture

Current Limitations - What doesn't work yet