Reduced flashing starts enabled
Reduced flashing is on by default. Paired plates still need to be visually compared as part of the observation loop, so this setting does not remove all image changes.
You can switch between plates with the mouse comparison control or Space. Pause with Esc whenever you need a break.
Development timing is optional
The plate-development timing exercise can be skipped with the Skip Development button. When enabled, it uses three forgiving rounds.
You can focus on observation and classification without making the timing exercise the center of your session.
Mouse and keyboard controls
The game is designed for a mouse and keyboard. Click either plate to mark a candidate; Z and X control the loupe, and the arrow keys move the close view. Space switches the comparison, Esc pauses and F11 toggles fullscreen.
Complete keyboard-only operation is not supported. The Windows build does not include controller or Xbox support.
Visual and language limitations
Detecting movement, brightness changes and plate differences is central to gameplay. Screen-reader support is not available, and we do not claim that the observation tasks are accessible without sight.
The game text and official website are in English. The prepared release does not include additional game languages.
Sound and play environment
GLASS SKY uses originally synthesized audio alongside its observatory presentation. The visual observation loop remains the focus of the game.
Use a comfortable display setup and take breaks as needed. A visual setting may help some players without meeting every sensory or access need.