You have to click in the window/go fullscreen, then press tab. (browser steals tab, sry game supposed to be desktop originally, my bad)
well, some of my close people say to me: "don't tell em!", But I will be straight, it is prerendered 3D graphics pretending to be 3D this is COMPLETELY 2D game. I love exploring the idea that our human perception is basically 2D, more things are to come, please follow me to not miss on them :) (I will be sharing later also how I did the code in GDevelop)