Zero-K is a similar game (also opensource, built on same engine, slightly different design goals): <a href="https://zero-k.info/" rel="nofollow">https://zero-k.info/</a> <a href="https://store.steampowered.com/app/334920/ZeroK/" rel="nofollow">https://store.steampowered.com/app/334920/ZeroK/</a><p>Zero-K simplified the economy (metal cost = energy cost) but added a whole lot of mechanics like overdrive grids and made every unit unique. There is a lot more unit variety with mind-control, jumpjets, shields, unit-throwers, self-replicators, teleports, terraforming, etc.<p>Their design blog is also very interesting: <a href="https://zero-k.info/mediawiki/Cold_Takes" rel="nofollow">https://zero-k.info/mediawiki/Cold_Takes</a>
An ongoing discussion about OpenRA may interest this audience: <a href="https://news.ycombinator.com/item?id=42823667">https://news.ycombinator.com/item?id=42823667</a>
Very closely follows the style of Total Annihilation, a 4X game I spent a fantastic amount of time in.<p>Perhaps still the only game whose loading screen dedicates time to loading explosions!
I was surprised there weren't more prior submissions, but one for their website did have some commentary back in 2021 <a href="https://news.ycombinator.com/item?id=28201265">https://news.ycombinator.com/item?id=28201265</a>