That's strange, because the game is set to play at 1920x1080 resolution, so I mean it should fit your screen. Either way, thanks for the feedback and I can look into what might be causing that (or maybe I could add resizable resolution or something)
Could be me though, it is a second game so far in this jam that has the same issue. Might be the same engine which just does not want to work properly with my browser.
