Warfare Incorporated is a completely free, open source, real-time strategy video game with no ads or trackers!
Tag: warcraft
Command and Conquer
There is an online playable version of Command and Conquer made in HTML5 and JavaScript! The demo was open source, the final game unfortunately no longer
Mindustry
Mindustry is an open source video game. A hybrid between the latest tower defense and the old real-time strategies. Absolutely worth trying