Unreal Engine 1

Epic Games | Released 1998

The first generation, Unreal Engine integrated rendering, collision detection, AI, visibility, networking and file system management into one complete engine.

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ezEngine

Oct 29 2021 MIT Released 2021

ezEngine is a free, open source game engine written in C++. Its philosophy is to be modular and flexible, such that it can be adapted to many different...

zGameEditor

Mar 19 2024 MIT Released 2007

zGameEditor: The rapid development solution with a tiny footprint. Create games that have a small distribution size using procedural content. The game...

Open Game Engine

Jul 20 2012 GPL Released 2007

The Open Game Engine (OGE) is a project to create a fully featured game engine, including graphics, physics, input, networking, scripting and much more...

Unreal Engine 3

Dec 2 2023 Commercial Released 2007

Unreal Engine 3 is a complete game development framework for next-generation consoles and DirectX9-equipped PCs, providing the vast array of core technologies...

Apocalyx

Mar 19 2024 Commercial Released 2005

The engine is based on OpenGL. Version 1.5 is better to access some advanced features, but 1.1 should be supported as well. The renderer uses some common...

RPG in a Box

Aug 30 2023 Commercial Early Access 2019

RPG in a Box is a tool for easily creating 3D grid-based, voxel-style RPGs and adventure games—everything you will need for building and sharing your...

OldSchool Library

Apr 3 2024 GPL Released 2006

OldSchool Library (also known as OSLib), is a 2D graphics library for the Sony PSP. Created by Brunni late 2006. It uses the power of the PSP to easily...

Unity

Apr 29 2024 Commercial Released 2005

Unity is a multiplatform game development tool, designed from the start to ease creation. A fully integrated professional application, Unity just happens...

OpenSpace3D

Feb 7 2021 L-GPL Released 2020

OpenSpace3D is a free software suite for the development of interactive real-time 3D projects. It allows you to create interactive 3D scenes without entering...

OEngine

Dec 20 2017 Commercial Released 2012

OEngine is a multiplatform C++ engine with an WYSIWIG editor. It's made to be very flexible, and has been used in many internal prototypes, and is currently...

Ren'py

Apr 12 2024 MIT Released 2004

Ren'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...

Aztica 6DX

Mar 19 2024 Commercial Released 2005

Aztica 6DX is a COM-based 3D Engine for Windows using DirectX. It features outdoor / indoor rendering, collision detection, portal-based visibility system...