The video clocks in at almost 19 minutes long, and showcases Iron Man, Thor, Hulk, Captain America, and Black Widow gameplay. The video description and press release both call A-Day a "tutorial level," so it is clear that this is an early portion of the single-player campaign that will ease players into learning how to use each hero. Marvel's Avengers releases for Google Stadia, PC, PS4, and Xbox One on May 15, 2020 and you can pre-order it on Amazon right now.