In 2003 Revolution Software re-released "Beneath a Steel Sky" as freeware. It is playable on several different platforms (including Linux and MacOS) using a freeware cross-platform adventure game interpreter ScummVM. It is wonderful to see the commercial companies cooperating with the open source software developers !

The game can be downloaded from ScummVM home page.

I've tried the Linux version and played for about half an hour - the game run very smoothly, the speech worked as well as sound effects. Unfortunately, the speech eventually disappeared and after a couple of minutes, the game was completely stuck. ScummVM is still in beta, so naturally, some bugs are to be expected. Meanwhile, the useful playing tip would be to save often !