To play this on Steam, please go under betas and choose current_beta from the drop-down list. We would really appreciate some testers on this so that we can get back out of beta status as quickly as possible! There is not currently a way to get the beta versions on GOG, but we won't be in that status too much longer, knock on wood. I'd mainly like to be sure that the science costs and similar feel okay now, as I think all the major bugs are out.
Release notes:
https://wiki.arcengames.com/index.php?title=AI_War_2:_Building_Multiplayer#Beta_2.044_Scientific_EqualityGolems and other things that you upgrade with science now should be vastly more attractive. There's a lot of other stuff going on in there as well, mainly for modders and such in the future, but the big thing is about Golems and Arks and the balance and viability of science as it is right now in the post-EXP landscape.