Nights into Dreams: Score Attack
Platform: Nintendo Game Boy Advance
Region: Special Release (USA)
Media: Cartridge
Controller: Gameboy Advance
Genre: Shooter
Gametype: Licensed
Release Year: 2002
Developer: Sonic Team
Publisher: SEGA
_________________________

This is a Game Boy Advance bonus mini-game.  To collect the bonus mini-games you can download to your GBA and play, you'll need to find the eggs corresponding to the games through some levels of Billy Hatcher. When you find one of these eggs, you need to feed it and then hatch it. A small GBA system will come out of the egg and as soon as you collect it, the mini-game will be available to play at the level selection screen.

NIGHTS -Score Attack-

Circus Park, Mission 2.

From the starting place, go near the edge on your right and look below, you should be able to see a green hoop. Jump into that green hoop and then in the area below. There are many enemies here... Go to the far right end corner to find a purple colored egg. Hatch it and collect the GBA inside.

http://faqs.ign.com/articles/455/455003p1.html
