thesheeep
Star Ruler 2 - The old link is broken, but here's but here is a new way to download it:
Java-based installer, launcher and mod manager for the Open Star Ruler project:
https://github.com/OpenSRProject/OpenStarRuler-Launchpad/releases
Beyond All Reason
Beyond All Reason is a realtime-strategy created by a team of passionate developers in love with the genre. Built on the powerful SpringRTS engine it aims to revive the vibes of the glorious Total Annihilation and it's spiritual successors like Supreme Commander or Planetary Annihilation.
Loria
Loria is a homage to classics from golden era of strategy games, with modern spin on controls and user experience.
Game introduces not just RTS elements but also RPG elements such as: hero units, collecting items and quest driven missions offers for a more interesting take on the RTS genre.
GOG:
https://af.gog.com/en/game/loria?as=1649904300
Steam:
https://store.steampowered.com/app/946660/Loria/
Machines: Wired for War
The 3D Real-Time Strategy video game from 1999 developed by Charybdis and distributed by Acclaim.
Mindustry
Mindustry is a hybrid tower-defense sandbox factory game. Create elaborate supply chains of conveyor belts to feed ammo into your turrets, produce materials to use for building, and defend your structures from waves of enemies. Features include a map editor, 24 built-in maps, cross-platform multiplayer and large-scale PvP unit battles.
OpenHV
A mod for OpenRA based on the
Hard Vacuum design by Daniel Cook. It aims to be an open content real-time strategy game with no exceptions. Set in the distant future where mega corporation battle themselves this standalone title comes with multiplayer (LAN and internet) support, competent skirmish bots as well as an integrated map editor. It allows for spectators to join and replays to be shared.
OpenSA
A recreation of Swarm Assault game in the OpenRA engine. The goal of this project is to bring modern controls and quality life improvements to Swarm Assault game released in 1999 while still being faithful as much as possible to the original source material. Although the project does not hesitate to add new content which enriches the overall gameplay.
Control huge swarms of ants, beetles, spiders, scorpions and wasps in a desperate attempt to control the landscape. Begin your crusade by conquering easy levels and progress to harder levels where your knowledge of each creature's strengths and weaknesses will be heavily tested. Play Swarm Assault today and discover why these creepy crawlies dominate this planet!
Remnants of the Precursors
Remnants of the Precursors is a modernization of the 1993 strategy game "Master of Orion". You will play as one of 10 unique races and lead them to galactic domination or, if you fail, humiliation and defeat. Micromanagement is minimal and the gameplay smooth and streamlined.