So i found out that these f2p games add 1+ game to your library (for more games badge) :)

The Awesome Adventures of Captain Spirit

Life is Strange 2 (Episode 1)

Artifact Classic

Artifact Foundry

GRIMM (Episode 1) - has trading cards

Penumbra: Necrologue

Romance of the Three Kingdoms Maker

Serena

The Descendant (Episode 1) - has trading cards

eFootball PES 2021 LITE

Cry of Fear

No More Room In Hell

The Archotek Project

Odysseus Kosmos and his Robot Quest - Episode 1

AX:EL