Zero Gunner 2 [DC]

In-game reset
Pause game play, then hold A + B + X +Y and press Start.

Replay mode
Successfully complete the game to unlock the "Replay" option at the main menu. Select it to watch the game auto-play.

Expert mode
Successfully complete the game under the arcade or higher difficulty setting to play more difficult levels.

Full pause screen
Pause game play, then press X + Y.

New shooting weapons
Collect all the objects you see after the planes explode.

Unlimited credits
All you have to do is to play the game several times...the further you go, the number of credits increase. At the end, you'll be given infinite credits, depending on how many times you've played the game

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Codes Made & Tested on 198 Version Cheat Device (JAPANESE)
# Description Code
1 Infinite Credits 002C5114
0000000A
2 P1 Infinite Lives 000A2334
00000003
3 P1 Score Modifier 010A232C
0000????
4 P1 Max Special 000A2340
000000FF