Fun, but two critiques.

First, you kinda have to know SQL to play, so I’m not sure what it’s teaching? More like practice SQL, than learn SQL.

Second, there’s no direct references from one query to the next, so you have to write and rewrite the same statements, and then remember answers to go onto the next step. You either need to do this on a computer with notepad pulled up to copy/paste queries, or a physical notepad to keep track of info.

This is especially true in the later levels where the number of databases increase.

Kinda difficult to play on a phone with no good way to copy/paste or save queries.