OH YES. You are totally right. I love the grainy look and nearly every game of me makes use of that post-process-effect. It is kind of a personal addiction. When I see the post-process-profile I have to give this effect a try. Actually I think there is only one reason why not all of my games make use of it: Not all of my games make use of post-processing ^^.
Regarding the assets: The only thing which is handmade are 3 Sprites (up-/down-arrow and the click-button-icon). Besides that:
- 3D-Models: All are unity-primitives with custom PBR-Shaders
- Sound-Effects: https://assetstore.unity.com/packages/audio/sound-fx/free-casual-game-sfx-pack-54116
- Music: https://tallbeard.itch.io/music-loop-bundle (<-- I am a big fan of that bundle)
Thank you very much for your nice feedback :-)