Thank you for playing! I really appreciate your feedback.
We hadn't added fullscreen button because when you go fullscreen, it's just same small size game and black background :p I think due to something related to build settings or UI canvas scaling in Unity. Perhaps a few patches will arrive for Bugsy... we were buzzing with ideas during development but ended up cutting a lot of stuff to make time. I think such is the nature of game jams...?
Thanks again for playing and commenting :3