The 50 levels was a example. Even it was a 3 level pack. The author wans you to give a challenge . He doesnts wans someone who is cheating to going to next levels, he just wants you to play the whole level and enjoy it. If he didnt wanted that, he just could let it show in the homecooked levels. Actually this program is like the password hacker, the author doesnts wants ppl to see the level and so passwords it, in this case the author doesnts wans the player to play the level just whenever he wans, that way he hides it. UNDERSTAND? =)