When you click a number or press a key, the number should be highlighted for a short time.
In some other games, after a wrong try the number disappear and in other games the number gets semitransparent and disabled. It makes the later tries easier, but my small daughter learned to bruteforce the tests :) .
Sad cats when you get a wrong answer? Perhaps it's a bad idea.
Super happy cats when you get the right answer?
What about a mixed level, where you get some samples of the last two levels? (The last levels are not so easy.)
When you click a number or press a key, the number should be highlighted for a short time.
In some other games, after a wrong try the number disappear and in other games the number gets semitransparent and disabled. It makes the later tries easier, but my small daughter learned to bruteforce the tests :) .
Sad cats when you get a wrong answer? Perhaps it's a bad idea.
Super happy cats when you get the right answer?
What about a mixed level, where you get some samples of the last two levels? (The last levels are not so easy.)
What about dogs? I like dogs. :)