Which indies did you discover and would love more people to know about? I’ll start: The Pale Beyond. Not sure if it’s a hidden gem tbh, but it’s such a good story rich game. I laughed, I cried and felt the characters struggles. If you like story rich games/ choices matter, check it out.
Iconoclasts - really nicely made metroidvania with pixel graphics
Tametsi - a collection of handmade Minesweeper puzzles with additional twists and mechanics. Extremely cheap on Steam
Gunfire Reborn - roguelite FPS with Borderland-ish graphics, decently made 4 man co-op (unlike Risk of Rain 2, you can actually revive teammates that got knocked down immediately) and a lot of difficulty scaling. Notably, still gets new content, both free and paid DLCs (those add new classes and some new weapons)
Edited to add another: Opus Magnum - an automation/optimization puzzle game with alchemy theme. Supports user-created puzzles through Steam Workshop
Tametsi just barely eked out being my most played game of 2023 over, duh duh duh!! Elden Ring. Yes, it took me longer to finish a $1 Minesweeper clone than to finish a massive Fromsoft Soulslike. Haha!