Portarius [Steam] is a puzzle-adventure game about a little spaceship equipped with some sort of portal gun and it's now on Linux.
While it wasn't announced, the developer spoke to us privately to mention the Linux release going live yesterday.
I have to admit, after watching the trailer it does give off a bit of a Portal vibe, which is cool as it's an interesting game mechanic.
The game is split across three chapters, a Subterranean world where you will be utilising common items such as rocks, metal bars and pipes. There's the Underwater world where—you guess it—you're dealing with some liquid physics and finally the Mechanical world with buzz saws, steam pistons, hydraulic presses and so on.
You can find it on Steam for £5.19.