each level is different
I'd say this is a very good game. Each level presents you with a different challenge, either a puzzle that you have to work out, or an increasingly difficult practical trial, or in most cases both.
The lagging cursor is a key part of the difficulty and the test, and anyone who complains against it misses the whole point of gaming.
Some levels may take several attempts but you can usually learn a few tricks that shouold ensure safe passage, eventually.