Helldivers (PlayStation 4)

Helldivers is one my favourite cooperative multiplayer games of all time. It is an intense dual-joystick shooter where you and your team must complete a variety of randomly generated missions while gunning down hordes of aliens, 'Starship Troopers'-style.
Everything in the game is designed to be fair but incredibly punishing. You can be killed by friendly fire, supply drops, or even get crushed underneath the spaceship that arrives to evacuate you. However, when you learn the rules of the game, you will start to carefully dance around the constant threat of death. This is what makes this such a different experience than most dual-joystick shooters: the most important skills you need in Helldivers are not moving and shooting, but teamwork, balance, and multitasking. If you have played it, you'll know that having to input a launch code with your D-pad while hundreds of bugs are trying to eat you is incredibly tense, and avoiding failure requires solid team tactics.
Helldivers mimics the experience of being a space marine in the 1997 movie 'Starship Troopers'. The game even replicates the satire of a future fascist US government from Verhoeven's movie. I won't hesitate to say that this is the best 'Starship Troopers' game ever made, even though it doesn't hold the official license for the title.
Before creating Helldivers, Swedish developer Arrowhead Game Studios created innovative spell-casting RPG Magicka in 2011, as well as the 2014 Gauntlet remake, a great coop game in its own right.