OpenRA is described as 'Open-source reimplementation of Westwood’s Command & Conquer Red Alert game engine, updated to use the hardware acceleration of modern video cards using OpenGL' and is a RTS game in the games category. There are more than 25 games similar to OpenRA for a variety of platforms, including Windows, Linux, Mac, Steam and Wine apps. The best OpenRA alternative is Age of Empires. It's not free, so if you're looking for a free alternative, you could try Warzone 2100 or Dune Legacy. Other OpenRA like games are Warcraft III, Command & Conquer, openage and OpenHV.
Real-time strategy series where players guide civilizations from small tribes to empires across millennia, managing resources, researching technologies, building military strength, exploring, and choosing strategic paths to victory in campaigns and multiplayer modes.
Set a generation before the events of the original Warcraft began, Warcraft II is a real-time strategy game by Blizzard Entertainment. Cunning, sinister, and seemingly unstoppable, the demonic Burning Legion prepare to launch their long-awaited assault on the mortal world.
Join "The Project" to restore humanity's synaptic-link technology after nuclear war has devastated Earth, rendering it a Warzone 2100.
Command & Conquer (C&C) is a real-time strategy (RTS) video game franchise, first developed by Westwood Studios. The first game was one of the earliest of the RTS genre.
Because it's parental game series.
Dune Legacy is an effort by a handful of developers to revitalize the first-ever real-time strategy game. Based from Dune II
Free (as in freedom) open-source RTS Age of Empires engine. Written from scratch in C++, Python, Cython, Qt/QML, OpenGL/GLSL, Vulkan, ...
Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it. Still, it is easy to get started through playable tutorials.
Mental Omega is a free unofficial expansion pack for Command & Conquer Red Alert 2 Yuri's Revenge. It started off as a balance modification. After a few years, it had grown into an unofficial sequel.
Empire Earth, also known as EE, is a real-time strategy video game developed by Stainless Steel Studios and released on November 23, 2001. It is the first game in the Empire Earth series: Empire Earth, Empire Earth II, Empire Earth III.
Spring:1944 is a WWII themed game based on the open source Spring Engine. Our goal is to create four fully functional sides (US, Germany, USSR, Britain) with period-accurate units and strengths. Realism is a primary design goal, second only to creating a game that is fun and...
Age of Mythology is based on building towns, gathering resources, creating armies, and ultimately destroying enemy units and buildings. In this way, players are able to defeat and conquer rival towns and civilizations.
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Because of it's different gameplay. More similar is Warcraft 1 and 2.