In this rather linear, Japanese adventure game, the narrative unfolds as the users find their way through a dead-tech urban environment by trying to read the coded information provided by characters and objects.
Information from wikipedia (dd. 9-12-2011)
Gadget: Invention, Travel, & Adventure (or Gadget: Past as Future) is a videogame or interactive movie, first released by Synergy Interactive in 1993. Gadget resembles a point-and-click adventure game similar to Myst,
but with a strictly linear storyline culminating in a fixed finale.
Thus it tends to be classified more as an interactive movie rather than a
videogame. The story centers around a future dominated by retro
technology from the 1920s and 1930s, especially streamlined locomotives
and flying machines.