libGDX
CommercialThe libGDX project is a cross-platform game development library written in Java, with some JNI code for performance hungry sections. It abstracts away...
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ZDoom
Public DomainZDoom 2.7.1 (Requires a DOOM, DOOM 2, HERETIC, HEXEN, or STRIFE IWAD) ZDoom is an enhanced port of the official DOOM source code to Win32. As such, it...
id Tech 3
GPLPreviously called the "QUAKE 3 Engine" and one of the most successful licensed engines in history, id Tech 3 was the engine used to create games such...
Unreal Engine 5
CommercialThe world’s most open and advanced real-time 3D creation tool, Unreal Engine 5 will be available in preview in early 2021, and in full release late...
Unreal Engine 1
CommercialThe first generation, Unreal Engine integrated rendering, collision detection, AI, visibility, networking and file system management into one complete...
Unreal Engine 4
CommercialThe most world-class game engine to date, Unreal Engine 4 gives you the power to do more than ever before. Bring your creative visions to life directly...
Zero Engine
ProprietaryA proprietary game engine developed by Pandemic Studios, first used Battlezone II: Combat Commander and later used in several Star Wars games including...
Doom Engine
GPLThe Doom engine is the game engine that powers the id Software games Doom and Doom II, as well as Raven Software's titles Heretic and Hexen, then finally...
Xash3D Engine
GPLXash3D is the powerful independent open-sourced 3D-engine, aimed for high compatibility with GoldSource engine formats (maps, models, textures, sounds...
Ren'py
MITRen'Py is a free, 2D, and cross-platform engine that helps you make story-based games including visual novels and simulation games. It uses a scripting...
Source
CommercialThe Source engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven...
RCCE2
CommercialRealm Crafter Community Edition is a continuation of development of SolStar Games’ Realm Crafter Standard. It comes packaged with every tool you would...