Thanks! :)Yeah, I was thinking to ramp up the numbers from 3 to 10 and 30, and maybe 100 as a bonus level once you've completed the game for the first time.
Oh dear :D
Yep, using letters or shapes instead of numbers would be a good alternative.
Thanks! :)
Absolutely, sounds, music and more variety, perhaps even to indicate game progres, should be the next steps.