hello. this demo has seven levels. you can came by enter the codes in HOME page on KillOS.
Home>down below>search window.
prologue level 0 - 469230
level 1 - 666
level 3 - 310009
level 4 - 6714729
level 10 - 391177
level 8 - 789999
SORRY I DIDN'T WANT TO DO THIS