This one barely qualifies as hidden anymore

https://store.steampowered.com/app/1628610/Paquerette_Down_the_Bunburrows/

It's a very cute sokobon game where the blocks are bunnies that run away from you. There was some debate at one point about adding the MC to the C-team IIRC but it never panned out.

After some googling it looks like it is included in this month's "prime gaming" if you are a cuckold who gives bezos money.