With 4 different endings you'll have a chance to replay the game, choose a different path and experience new levels.
Because the regular version we made for distribution in various gaming portals had to be "E" rated (for everyone). And yet, our original story included spicy, adult themes. We prefered that version so we decided to release it ourselves. And we added few extras too.

So the differences in Author's Edition are:
original, unrated story and art
extra levels and themes for free (when they become available)
online scoring - you can post your score to this site and compete with other people
small bonus: each level has a unique title displayed when it starts

System requirements:
Windows XP/Vista
750 MHz
256 MB RAM