Where is Opium?

Hello,

I wanted to play the Opium demo the other day but it's gone missing :(
Is it unlisted but still playable somewhere? or deleted because it was broken?

The only link I've found doesn't work: https://sbox.game/facepunch/opium_demo

game facepunch.opium_demo

Type this into the console

I dunno why it was hidden, it's not anymore

cause it had fucked shaders

So what happened to pie crumble or a full opium game