It helpfully features control diagrams, revealing that the game would have had grenades, a "slowmo" button, and other elements indicative of a shooter -- elements shared by Gotham City Impostors. However, unlike that existing, multiplayer-only "Batman" shooter, it also features a "story" mode.
Because the only evidence of this game comes from the UI artist, all we have to look at are images from menus and control diagrams. They're really, really nice menus.
