Currently your options are Indievania or Desura - I'd suggest Desura because most developers don't seem to update on Indievania even though those versions are downloadable executables without DRM.

I've gone through the opening tutorial and have played through a portion of the first world. There appear to be eight - rather or not the game opens up to a second screen to reveal more I am not sure as of yet.

I started a small thread about this when I first seen it a couple months ago: It looks like a cross between Metal Gear Solid and FF7.

More or less it's branching Solid Snake stealth-heavy missions from one central point like Alpha Protocol.

It's on Green Light as well.

The only reason I bring this to attention is, as much as I've played so far, it is VERY much like one of those PSOne games that got released for a short time under the radar and ended up selling for eighty bucks on eBay six years later.

The unique way that the developer has implemented game play is definitely memorable.

http://www.desura.com/games/worlds

http://steamcommunity.com/sharedfiles/filedetails/?id=92959199&searchtext=worlds

Looks interesting. Downloading demo now.

Should warn that the graphics might not set properly at first (but it could've also been fault of my old PC) and you might either get a pitch black room displaying the glow of red and green entry lights on doors or you might wind up with a really washed-out and texture-less experience (the only other game I had this problem with was Saints Row 2) so keep in mind that dynamic lighting appears to be more important in this game than most others.

After diddling with nVidia control panel and installing the full version it ran as it should and I didn't have to tamper with the default options.