Daggerfall-unity Alternatives

Cataclysm-DDA

Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.

devilutionX

Diablo build for modern operating systems

Mindustry

The automation tower defense RTS

OpenRA

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

OpenTTD

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

alephone

Aleph One is the open source continuation of Bungie’s Marathon 2 game engine.

wesnoth

An open source, turn-based strategy game with a high fantasy theme.

Thrive

The main repository for the development of the evolution game Thrive.

openmw

Unciv

Open-source Android/Desktop remake of Civ V

etlegacy

ET: Legacy is an open source project based on the code of Wolfenstein: Enemy Territory which was released in 2010 under the terms of the GPLv3 license.

OpenXcom

Open-source clone of the original X-Com 👽

TES3MP

Multiplayer for OpenMW, a reimplementation of The Elder Scrolls 3: Morrowind's engine.

packages

Package build scripts and support for luxtorpeda client (by luxtorpeda-dev)

openmw

OpenMW is an open-source open-world RPG game engine that supports playing Morrowind. Main repo and issue tracker can be found here: https://gitlab.com/OpenMW/openmw/

openmw-android

OpenMW for Android (by Sisah2)

Elysium

Elysium is a visually focused list that is fully featured with hundreds of new additions and optional Creation Club support—extending the base setup with Enai Siaion's full suite of gameplay overhauls as well as various new quests and encounters. (6GB+ of VRAM Required.)

OpenTESArena

Open-source re-implementation of The Elder Scrolls: Arena.

UnderworldExporter

Discontinued Updated Release 27th Oct 2018 Unity based port of Ultima Underworld I and II. Download under releases

UltimaHacks

Patches which add features to, and improve the usability of, the 1990s video games Ultima VII (BG and SI) and Ultima Underworld (I and II), along with a program to compile and apply these patches.