Loving the Rising Storm 2: Vietnam beta. Still has some of that pre-release wonkiness in the controls and movement, and the typical lengthy and infuriating learning curve that comes with this series of sim oriented FPS games. But it still has that gritty level of realism found throughout the series, and the sound effects are just so amazing. Artillery barrages, helicopter attack runs, napalm strikes are both visually and audibly impressive, even moreso being actually caught in one or being near one as the concussive force of them screws with your soldiers equilibrium.
So far has a nice mix of maps including the infamous Hamburger Hill and the siege of Hue.
Gameplay completely removes the one man army mechanic found in a lot of online shooters and working with your squad and platoon is essential to survival. You will die a lot if you don't play conservatively, this plays completely different than a twitch shooter. Firing full auto screws your aim, wastes your very limited ammo and you generally don't hit anything. Your best chance of getting kills is working with your squad as a fire team. Going off on your own is guaranteed death.
Full release is due at the end of the Month.
Here's some house to house urban fighting in Hue, https://www.youtube.com/watch?v=BkViR5sruto&t=1034s