Here's a free game that you should try out. It's called Psycutlery, an action-platformer where you bring down an abomination of evil with a piece of silverware. I have to admit, the synopsis alone sold me on this one, and since it's free you'll only lose a bit of time trying out it and potentially find a game you love!
The what: "With an emphasis on variety through the constant introduction of new gimmicks and ways to play, Psycutlery is a game that prompts the question: 'what's next?!'. Take control of Lillian the Alien and her mind-controlled spork (that YOU can name). Grab things. Throw things. Eat things. Jump in mid-air up to five times! Bring down an incomprehensible abomination of evil with a single piece of silverware (plus around 30 different power-ups!), and witness copious craziness unfold across Planet Geozaic!"
Definitely sounds like one for fans of totally weird and wonderful indie gems. It looks retro, and for good reason, it was originally designed to be very much like a retro console game.
It starts slow and then just gets more and more interesting with all the different level mechanics you have to face. Have a look at the trailer below:

Direct Link
The developer also seems to be quite a big fan of the Steam Deck. They also recommend you play with a controller on Desktop PCs too and you'll need Proton to run it on Linux.