The Talos Principle
I'd had this on my list for a long time, but the announcement of the sequel inspired me to finally play it. It's a pretty good first-person indie puzzler, with a very depressing subject matter. The whole thing is a frame to explore the idea of what the point of life even is. So yeah, it's interesting, but you might want to be in a certain state of mind before going into it.
Grade: B
The Talos Principle: The Road to Gehenna
DLC for the The Talos Principle, more of the same, but with less interesting philosophy behind it. I liked it better though because I felt like the puzzles were better-designed.
Grade: B+
Planet of Lana
This is very much an story-heavy-but-largely-silent indie side-scroller in the vein I'm sure you're very familiar with. Think Inside, though not as dark. It's basically Studio Ghibli's War of the Worlds. As a game it's competent. The platforming can be annoying because your controls aren't very precise, but luckily they don't often ask you to be precise. I enjoyed the puzzle solving, but there's not much of it. Most of the gameplay involves traversal, either in a pure form or while sneaking past enemies. The story is pretty formulaic for this kind of game, but it's well-executed enough. It's pretty as all get out too.
Grade: B+