Inside is a masterpiece, sad to see it get delisted.

Will Limbo and Inside also get delisted in other stores as well?

I love that I only saw this because it wasnt stickied...
- that side scrollers aren't my thing but after watching the trailer I thought "actually, it does look interesting - especially at that price!"...
-and that for the last three days paypal (via GOG only - its working on other stores) won't allow me to sign in and buy it.
...guess I'll be awaiting a delisting discount at that other place!

Given that this involves some legal trouble over the IP, there is a chance that both games get delisted on other stores alongside the delisting on GOG and we just don't know it yet.

Hey do I still get new achievements for Inside after it gets delisted?

For anyone who doesn't know, Barefoot Essentials (a script you can use in GreaseMonkey or TamperMonkey, etc) has the option to kick any threads about delistings up to the top of the forums for you. I think it does so by default, but if not, go About -> Barefoot Essentials, and then Forums -> Delisting Topics -> Group above Favorites.

I also recommend favoriting a few threads for potential advanced warnings. Kult's thread is already linked above, and the Games at Risk of Being Removed thread is also useful.

Yes you can still earn them.

And it is gone both.