Qix (3DS): COMPLETED!

Completed as in, level 99 beaten. After which it just returns to level 1 again, and doesn’t get any harder. Actually, after about level 20 or so I didn’t notice it getting any harder anyway, but for some reason levels 97, 98 and 99 were incredibly easy with a slow moving Qix and plenty of time before the sparks came after me. I wonder why?