[dzmien]

In that respect the Time Minders from the computer game Anachronox are like photons. If you've never played the game, Time Minders were creatures that experienced all time simultaneously. As such, they were found scattered around the levels and could be used by the player to "freeze" a moment in time. In other words, they were the mechanism by which the player could save her game. If I recall correctly, playing with an easier difficulty setting allowed the player to save the game at any time via the menu.