Looking through Steam sales for sub-$10 titles with "Very Positive" or "Overwhelmingly Positive" reviews is a good filter.
Some of my favorites over the years include Slay the Spire, Celeste, Vampire Survivors, and FTL.
Edit: How can I forget the "holy trinity" of mystery indie games? Return of the Obra Dinn, Outer Wilds, and Her Story. These are brilliant games that really make you feel like a detective.
I adore Return of the Obra Dinn, but didn't quite enjoy the madlibs aspect of The Case or the Golden Idol. However, it isn't necessarily a bad game and it did scratch the Obra Dinn itch a bit.
So many hours spent playing FTL. I was against getting Netflix subscription (we already had 3 streaming apps) until one day I noticed Into the Breach is available on mobile if you have a Netflix subscription. Can't believe I'm subscribing to a streaming service to play an indie game (wife turns out enjoy Netflix though).
I wish I could play Outer Wilds again. That's up there as one of my all time favorites. Obra Dinn was phenomenal as well. I haven't heard of Her Story, but if you're putting it in the same league as those 2, then I'll have to try it out! It's also only $0.99 on Steam right now.
Some of my favorites over the years include Slay the Spire, Celeste, Vampire Survivors, and FTL.
Edit: How can I forget the "holy trinity" of mystery indie games? Return of the Obra Dinn, Outer Wilds, and Her Story. These are brilliant games that really make you feel like a detective.