Easter Egg: Enter Service Mode, then press Right to change the sound effect to 01. Press the service button to display the screen calibration test grid, then press Left (x4), Right, Left (x2), Right (x5), Fire.
Easter Egg: If you enter your name as one of the developers nicknames on the high-score list, you'll get a multicolored rainbow flashing effect for 8.5 seconds (See STAFF section for nicknames).
Another item that can be found inside the capsules is the ray gun, which will upgrade Kissy's ray gun to a higher power level, allowing him to kill the enemies quicker. But when he is hit, his ray gun power level will decrease by one.
The bonus game can be very tricky. If you save a Paccet on a regular floor, you will have any amount of Paccets from 1 to 8 (depending on how many you have saved) in the bonus game. This will increase your chances of getting an extra shield. If you have 8 Paccets, you'll definitely get an extra shield in the bonus game. Every time you get a Paccet in the bonus game, you'll get an extra shield but lose all your Paccets and you'll have to start saving them again.
If you have Paccets on a boss floor, they will sacrifice themselves to help Kissy by throwing themselves at the boss for him. The boss will be stunned for a few seconds, which allows you to get in some free shots.
On some floors, the ground and walls have invisible holes in them. These can help Kissy get away from the enemies. And if a projectile fired by an enemy hits a wall or the ground, it will dissipate.