Enter these at the bottom of the screen to advance further.

3659 8960 3263 - Level 1
2965 3192 9023 - Level 2
3610 2354 7327 - Level 3
2921 0274 3999 - Level 4
3737 7423 1487 - Level 5
3053 9029 9071 - Level 6
2340 2318 5760 - Secret Level