Where the hell was this when I was a kid? Why did no one tell me about this hardcore spin-off of chalk gameplay?

Back in my day all we did was doodle and play hopscotch.

But in all seriousness, the special effects are phenomenal. The creator, whose work we've featured before, got some great detail in there. If you…

It's all fun and games until the giant claw descends from the sky and threatens to make you the unwilling plaything of a surly teenager.