Player can manually zoom in and out as they please.
Name variations: Manual zoom
The first video game about Zoom was released in 1986.
Mostly of interest are sideview and top-down games. In third person this often has little effect and in first person this is almost always part of telescope or similar device (though zoom that occurs without explanation, for example when aiming, is of interest).
Child groupsInfinite zoom, Focal length
compare with these groups