Test mode:
Press Up, Right, Down, Left, Up, Right, Down, Left at the title screen.
The "Test Mode" menu has options for a sound test and level select.
Invincibility:
Enter AIQY as a password.
Level Passwords:
Level --- Password
1 --- AJGJ
2 --- LAEA
3 --- ASNF
4 --- DMIA
5 --- INSI
6 --- NEUA
7 --- AALG
8 --- BLTO
9 --- UIAN
