Numbers displayed in the upper part of the screen, such as "x1.17" underneath "Experience," signify the increase of points you score when you hit an enemy. When this amount is high, you earn increased points for hitting an enemy. Elements affected by this score are: the number of shots possible, remaining life (activates Crazy Mode with 1 remaining life or less), the number of players, the condition of the machine gun charge, "GAME DIFFICULTY" and "START LIFE."

Getting shot on purpose and reducing your remaining lives to 1 or less lets you enter Crazy Mode. In this mode, your score for hits increases dramatically.

When the level in the Game Difficulty option is high, or if the number of lives is low per credit in Start Life option, you can obtain a higher score. It is best to keep an eye on the Score Coefficients (upper left screen) to adjust these settings.