A lovely simple concept, made well!
Reviews for "Less than twenty"
Lovely.
interesting game i havent find anything like this on newgrounds and i like it dont stop what u r doing
A simple and fun mathematical venture! Simple as in: easy to play, it does get challenging after a while, though maybe my numerical skills are just so low. Plenty of levels, ambient music in the background; plenty of mind matter to burn pn math. Nice work!
-cd-
Nice game. Do not think too complex. But it is really too easy to solve (that make me a bit disappointed). Keep go on!