Nuclear Dawn is on a free weekend, unfortunately it ends pretty soon. This is mainly just to test this new section too this post . Haven't played it myself so I can't give recommendation but it's only $12 on steam if you buy it during the free weekend I believe.
Play the full game for FREE, now through Sunday at 1pm Pacific Time. Plus, buy Nuclear Dawn before Sunday at 1PM Pacific to save 40%!
Unleash your soldier’s full potential. Earn double XP to rank up and unlock customization options faster. This weekend only!