The interesting part isn't just another AI demo. It's opening up game creation to people who don't know how to make games yet. This is my reaction to the announcement, not a hands-on test.
Spark demo footage supplied by Unity; pre-release version, with my commentary.
Full breakdown: https://youtu.be/ESr-JxuIQg8 (also linked as this Short's related video)
Unity Spark: https://unity.com/spark
Google Playground: https://playground.google.com
Roblox Assistant: https://create.roblox.com/docs/ai/accelerated-workflows
This is an announcement discussion, not a hands-on review. Spark beta availability and features can change.