koobas.hobune.stream
Why can't I find Unity tiny mode anymore?
As of 14/11/2019 I can't find tiny mode in my package manager in Unity 2019.2.12f1 or Unity 2018.3.14f1. Has it been discontinued? I have turned on preview packages. 
I have never used this preview / experimental feature. However 10 seconds of google brought me this:
https://forum.unity.com/forums/project-tiny.151/
Please do not ask questions that are irrelevant in a few days / weeks or that can be solved by just looking at the first google hit when entering the question there.
Unity has removed it temporarily for maintenance...
"As of today (10/15/2019) you won't see "Project Tiny" package in the Unity Editor Package Manager window. We've removed it from the list until the next preview is available. The latest Project Tiny package (preview-0.16.1) is broken with the latest beta and its dependencies, but we do not plan to fix this until the next preview. So during that transition time we do not want users to discover Project Tiny in the Editor without the full context of what's happening."
