Aurora: The Lost Medallion from Greek developer Noema Games is a very promising sci-fi adventure that will be coming to Linux.

Aurora: The Lost Medallion is a 2D, hand drawn, sci-fi, fantasy, point & click adventure game. In short, it is a family space adventure, about an alien girl's quest to find her identity. Inspired by old classics of the genre, the game blends comedy and drama to form a story that challenges your brain and teases your heart.

Features:

Classic point & click adventure gameplay.

Fully Voiced by professional actors.

More than 5000 lines of detailed backstory.

Hand-drawn art.

Original Soundtrack.

I tried it out myself and there's a huge amount of charm to it. The style is nice and the voice acting is surprisingly good too! The puzzles were quite interesting too, took me a while to actually figure them out. You can find the demo on itch.io if it sounds like your idea of a fun time.

It's a Unity game and I did notice some graphical issues though with my NVIDIA GPU. To get around them until they upgrade their Unity version (now the issue in the game engine is fixed), you can use this command to launch it with:

AuroraTLMDemo.x86 -force-glcore42 -force-clamped

As for the full release, the developer told me that they're aiming to be available on Steam, GOG and Humble Store "this summer".