See SteamDB -> Metadata -> restricted_countries.

- settings should be available in the main menu. - only on/off toggles for audio is lazy, please add proper individual volume settings. - there's no way to go back from level select if clicked from the main menu. no icon to click, esc doesn't work either. - the mouse cursor should disappear after a few seconds of inactivity. - controls should be shown in the main menu and during level 1, and hotkeys on the icons. backspace is good for undo but some players might miss it. - holding undo should take bac...