It is in Early Access on Steam, but it sounds like it isn't ready for general release yet. You can look at the forums if you want more info, I've just checked occasionally to see that it isn't dead.

I'd recommend Xenonauts for anyone who hasn't tried it and like strategy games at all. It can be a challenge if you don't do a few things the way the game wants, i.e. what you can actually do in the unmodified game is much more limited than what it lets you do due to the funding limitation, although you can install mods or just edit some XML files if you want to change that and there is a guide that explans generally what you need to do.

I'd also recommend Guacamelee of course for anyone who likes platformers, one of my favorate games ever. The main difference between the Gold and Super Turbo is that Gold supports Linux and Super Turbo doesn't (although there is a forum post indicating that Super Turbo works fine under wine, not sure about Guacamelee 2). Super Turbo has some later small changes throughout the game.

I'm grateful GOG eventually un-rejected this.

Whats worth it under the radar on this list?

Yeah, I've been eyeing this game as well, and for under $5 I'd say it's a steal; plus with GoG's generous refund policy, what do you have to lose?

Thanks ciemnogrodzianin, if is not for you i 'd miss this offer!

You're welcome.
I also grabbed this one :) Never enough old crpgs in one's GOG library!

Monolith is great if you like a twinshooter roguelike with many weapons and a sci-fi theme. It's an hystorical low in my price area.
Fight'N Rage is a cool brawler but I recently got it for 3 €, I'd wait for a bigger discount.

Thank you! I hadn't heard of this site and am often trying to determine if a game has a no blood option (or sometimes other options related questions) so that looks super helpful when there are screenshots available.

So a big sale will be starting in Wednesday (16th December 2020)?

Had a lot of fun with this game. I still keep it installed on my pc to play the other characters at some point in the future.

And you can't beat that price!
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Thanks for always creating a list sorted by price and the % of the discount.

I really wish GOG would just add this feature to the sort by list on the sales pages.

Is it really that complicated a request?
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There are several wishlist entries for adding that feature. The one with the most votes is more than 7 years old and still ignored:

Sort by Price

In the meantime you can try Ghorint2t's nice user script. It provides all the features GOG should have implemented in their game catalog and is very useful, especially during large sales.

So a weekend sale now lasts until Wednesday? Makes (not) perfect sense.

Thanks for the info.
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Given the Winter Sale that's around the corner (likely Wed. as some have pointed out), kinda makes sense. =)
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