The haunted ps1 demo discs are similar. They have one for 2020 and 2021 plus an advent calendar game as well. All free on itchio.

Was gonna say the two Haunted PS1 Demo and the Madvent Calendar too, along with C.H.A.I.N. (although most games in this one are really short). All of them are free on itch.io: https://hauntedps1.itch.io/

There's also these two on Steam, both of them excellent:

https://steamhost.cn/app/361990/Lakeview_Cabin_Collection/

https://steamhost.cn/app/558420/Stories_Untold/

Originally posted by ovni.demon:

I know of: Peekaboo Collection
Amberskull
Dread X collection

But is there others games like that?
I mean small games made by indie (the same or different devs) put together in an anthology with a common theme (And sufficently big, so not the flash games compilation)

Hey, buddy! I discovered Amberskull thanks to you! What a game, man! Scary as hell! I had a lot of fun! Thank you for sharing this!

You've also got C.H.A.I.N., by the Haunted Horror PS1 community as well! 20 short games linked by some themes https://papercookies.itch.io/chain

The Madvent Calendar is made of 24 very shorts demos/proofs of concept https://hauntedps1.itch.io/madvent2020

They're both quite good and you've got a LOT of variety in them. The quality is not as high as in a curated collection like the Dread X ones, but it's still quite good and full of interesting stuff!

Haven't played it yet, but check out Scary Tales by Puppet Combo.