Petrell: Generally, anything interesting but priced over 20€ goes to wishlist and very few games over 10€ are insta buys for me.
This. I feel I have quite a wide taste for different genres, so quite often my decision to buy something has more to do with pricing than what genre etc. it is, albeit the latter affects too though (ie. I have skipped many cheap games because I feel confident I won't like nor never play the game).
I generally buy cheap games "blindly", ie. I might know next to nothing about the game, and just a couple of positive reviews or comments might convince me to buy it. There are just so many games out there to be bought that it would take ages to make a deeper analysis for each game before I buy it.
For me strategy games (especially RTS) on GOG is good news, it is one of my preferred genres, along with CRPGs. Still, I wish also for more FPS games maybe.
Here are games I seem to have bought since the beginning of December (the newest purchases on the top):
Darkest Hour: A Hearts of Iron Game
Sengoku
For The Glory: A Europa Universalis Game
Duke Nukem 1+2 (not sure if I will play these, I bought them "just in case" as they will be removed from GOG)
Bio Menace
Overclocked: A History of Violence
Quest for Infamy
This War of Mine: Soundtrack Edition
The Book of Unwritten Tales 2
The Vanishing of Ethan Carter
Hogs of War
Galactic Civilizations II: Ultimate Edition
MX vs. ATV Unleashed
Supreme Ruler 2020 Gold Edition
Trine 3: The Artifacts of Power
Samorost2
Trine 2: Soundtracks & Artbooks
Escape Goat 2
Toren
Kyn
FireStarter
Terra Nova: Strike Force Centauri
Revenant
Lumino City
Indiana Jones® and the Emperor's Tomb™
Outlaws + A Handful of Missions
Afterlife
Star Wars™: Rebel Assault 1 + 2
Venom. Codename: Outbreak
Starship Titanic