
Cubed:
Broforce grants the pleasure of guiding a randomly chosen character (or bro) through chaotic levels that are filled with enemy terrorists. Reaching the goal is easier said than done, but it is rarely, if ever, accomplished without a plethora of action, explosions and fire. It may take a little time to get accustomed to the frantic pace, but that adds to the game's appeal as an enjoyable, pick-up-and-play, run 'n' gun platformer. The range of bros available makes each attempt at a level both unique and interesting, while the fast-paced gameplay makes it a very moorish experience.

Are you looking for more games to play similar to Chained Together? Power Up Gaming wrote up a list of titles you may enjoy playing through with others.
"It’s time to suit up and join the Bros as the internationally acclaimed side-scrolling run ‘n’ gun extravaganza Broforce is out today as a boxed Standard and Deluxe Edition for Nintendo Switch and PlayStation 4.
Developed by Free Lives and published by Devolver Digital, the boxed Standard and Deluxe Editions will be created and distributed across European specialist retailers by U&I Entertainment." Free Lives and Devolver Digital.

Because... America – f*ck yeah!
I don't remember if you save the world in that game but Urban Chaos: Riot Response was one of the most american games back in the day, I've never even been to the country and that game was still rad.