Mechwarrior 5: Mercenaries

Great when it works.

This has slowly been edging out GTFO as our main cooperative game night game (at least until the next Rundown Extension), since it is very fun to customize your giant fighting robot and then pilot it against other giant fighting robots, tanks, helicopter planes and infantry. Graphics are good as are the controls. It doesn't matter that there are only around five or six types of missions, there will be enough variance to keep you entertained.

The campaign also follows a timeline so while you can be doing jobs anywhere in the galaxy, things happen without waiting for you. Borders change as the great houses fight for more territory. New mechs or new versions of old mechs are released in later years. It's all very cool, yet I can't actively just recommend it because it does have a few drawbacks.

The biggest being it is a pain in the ass to get working cooperatively. For one, we are using a lot of mods (which I am normally against) to get things to work (listed below) and even then there are some missions where DL and I might just drop out of the game or strong hang. The last two missions of the Kestrel Lancers DLC story line on Sarna are notorious for this and we had to join mid battle more than once. Only Jim, the host, can buy equipment from the shops, use the storage tab and accept missions, basically running the management side of things. He doesn't mind, but it does mean DL and I have a lot of down time while he does that.

There's also no in game chat - good thing steam chat works just fine. This is an ok game if you play it single player, but a great game to play cooperatively... when it works. DL has put up some videos featuring the inside of our drop ship and us in the field, in which we just discover mechs have headlights and night vision after literal years have passed by our game. :P

List of mods we use:
Yet Another Mechlab
CompassHeadings
CustomGenericPilotPortraits
Enable Infantry
Yet Another Weapon
Yet Another Weapon Clan
Higher Visibility MiniMap Arrow
Higher Visibility Torso Twist
ThrottleGauge
HeatGauge
Unlock Coop Tabs
Custom Dropship Skin