Wait, there's no executable? That's odd, sounds like it was left out when packaging the game. Can you give an example?
(For what it's worth, those are files from Unity. It's probably the most popular game engine nowadays.)
well a few games with the monobleedingedge and unityplayerdll things are bright lancer, devil express, sclash and shinin blades (just picked randomly). there are some games that don't have the two files mentioned but still don't work although these are a small amount. when i download the game on the itch app im able to play these games with the two files. If unity has something to do with it could i possibly need to download some kind of unity application?