Accelebrid

At the TOMY logo, hold A, B, X, Y on Controller 2 until the title screen appears. If done right, the title will be red instead of blue. Now, wait until the Silver Mare's attack demo starts and when it reaches the "Attacker" animation, hold any of the following buttons on Controller 2 until the gameplay demo starts with the words "Press Start". You can then release the buttons and start the game normally.

Effect	Code
25 Continues	Hold L on Controller 2
6 Smart Bombs	Hold R on Controller 2 and keep holding it until you start the 1st Stage
Secret Ending (after beating the game)	Hold X on Controller 2

At the TOMY logo, hold A, B, X, Y on Controller 2 until the title screen appears. If done right, the title will be red instead of blue. Now, start the game, select your weapon and at the "Attacker or Defender" screen, pick one and right before the screen completely fades to black, hold one of the following buttons on Controller 1.

Effect	Code
Stage 2 - Tiamat Gorge	Hold R + Start
Stage 3 - Railways	Hold Y + Start
Stage 4 - Underground	Hold X + Start
Stage 5 - Climbing Cheesering Tower	Hold B + Start
Stage 6 - Inside Cheesering Tower	Hold A + Start

At the TOMY logo, hold A, B, X, Y on Controller 2 until the title screen appears. If done right, the title will be red instead of blue. Now, start the game, select your weapon and at the "Attacker or Defender" screen, pick one and right before the screen completely fades to black, hold one of the following buttons on Controller 1.

Effect - Code
Stage 2 - Tiamat Gorge - Hold R + Start
Stage 3 - Railways - Hold Y + Start
Stage 4 - Underground - Hold X + Start
Stage 5 - Climbing Cheesering Tower - Hold B + Start
Stage 6 - Inside Cheesering Tower - Hold A + Start