Skull Fang (Japan) - MAME - Shoot 'em up / Flight

Special Mode (boss battle only): on the scroll selection screen, hold UP then press B3(x5), B2(x3). Very Hard: on the scroll selection screen, hold Right then press B2(x4), B3, B2, B3, B2(x2). Hardest Mode: on the scroll selection screen, hold Left then press B2, B3(x2), B2, B3(x2), B2, B3(x3). Thrust: if you select a 'Fighter' type pilot, you can use Thrust by 'code input' during ingame action. 1) Back Thrust: Up, Left or Right, Down + B3 - Back attack. 2) Side Thrust: Right or Left, Down + B3 - Side attack. 3) Air Brake: Down(x2) + B3 - Temporary invincibility. 4) Hi-Ion Shield: Left, Right + B3 or Right, Left + B3 - B.Roll Power-Up. 5) SECRET: Down(x4), Up(x2), Down + B3 - Enabled rolling attack.