The Penumbra games collection developed by Frictional Games and distributed by Paradox Interactive, have appeared in the Steam for Linux application database.
The current rumor on the Internet regarding the Steam for Linux launch places the event in the middle of November.
We shouldn't put too much trust in these rumors, especially because the previous one announced that a launch was imminent, and that was a couple of weeks ago.
Surprisingly, a delay in the release of Steam for Linux is actually a good thing. We wouldn't want a rushed software that causes problems on half the computers it's installed on; secondly, more publishers and developers have time to make their games available for the Linux platform.
In all fairness, the games in the Penumbra series, Overture, Black Plague, and Requiem, were already made available for Linux, but now they will also be available for Valve's Linux client.
Penumbra: Overture is a first-person survival horror game, that puts the focus on survival and problem solving instead of violence and gore. It's the first in the series, and a lot of gamers consider that it has started its own genre.
Penumbra: Black Plague is the second title launched in the series. The protagonist is the same as in the first games, but the setting is a lot more modern and the graphics were improved.
Penumbra: Requiem is actually an expansion to the Black Plague and it was developed as a satisfying conclusion for the two games.
The Windows version of Steam also provides a complete pack, called Penumbra Collector Pack, which includes all version. It's also on sale as we speak. Games bought for another platform will be available on all Steam platforms, so this might be a good chance to acquire the Penumbra series.
Our information is taken from the CDR
database and by no means is it completely certain. CDR Database is a record of data that describes every Steam game and subscription provided by Valve for the Steam service.
Usually, the new entries in the Steam database are firstly visible in the CDR Database before their official launch.