UNSIGHTED: a great Zelda-like/metroidvania from my home country Brazil, with a bunch of cool ideas about how to traverse the world and dungeons, neat souls-like combat and an anxiety-inducing time limit mechanic. It's set in an apocalyptic world where lesbian robots save the world with the power of love and incredible violence.
ZeroRanger: incredible shmup with awesome soundtrack, delicious anime-vibes, insanely-hard-but-fair gameplay and a surprisingly deep lore leans heavily on buddhist philosophy.
Dandara: another great metroidvania from Brazil. This one has an unique movement mechanic - you don't walk, you almost-instantaneously jump between platforms. The setting is pretty unique, with lots of references to actual brazilian culture and history.
One Way Heroics: an addicting top-down roguelike where you can only walk right, lest you be consumed by the Impending Wall of Doom that's coming from behind. Cooler than it seems.
Hacknet: a text-adventure-kinda-thing where you're a hacker doing hacker things. The interface emulates some old 80's systems and all your commands are actualy Linux commands. Also, the soundtrack slaps.
Hypnospace Outlaw: have you ever wanted to be a moderator forum from the late 90's/early 00's internet? Well, now you can.
20XX: Mega Man meets Rogue.
I'm a KDE guy and use it myself on my notebook, but GNOME with its multitouch gestures and polished (if a little inflexible) workflow is also an excellent fit.