Countdown Vampires
Play as Vampire Keith
Enter ” Prince ” as a first name and ” Darkness ” as a last name to play as Vampire Keith with only a powered-up stun glove and some punch moves.
Hidden graphics
Enter ” Yuka ” as a first name and ” Kobayashi ” as a last name. Get to the computer at the second or further save point to view actress Yuka Kobayashi, from whom Misato was based on. Two pictures will appear at each save point after the second one.
Alternate ending sequence
Allow Geils to kill you to view an alternate ending.
Special mode
Successfully complete the game in under seven hours to unlock special mode.
Blood type and vampires
Selecting a blood type (A, B, O, or AB) at the start of the game will have an effect on the type and difficulty of the vampires that will be encounted during the game.
| Infinite Health | 800B3F2E 0064 |
| Extra Money | 800B3F38 270F |
| Stop Timer | 800CEB98 0017 |
| Infinite Health | 800B2F86 0064 |
| Infinite Ammo | 800B2FAA 000C |
| Infinite Money | 800B2F90 270F |
| Weapon in Slot 1 | 800B2F9A 006A |
| Weapon in Slot 2 | 800B2FA0 006B |
| Weapon in Slot 3 | 800B2FA6 006D |