Ikaruga Unlockables

You can unlock this mode after playing the game for twenty hours. This mode adds an extra energy gauge that you recharge by annihilating enemies and use up while shooting.

After you have absorbed a certain amount of same-colored shots you can unlock a special laser homing attack.

By reaching a level without any continues you will unlock that level for these modes respectively. This means you have to reach level 3 in practice/conquest mode without any continues you will unlock that level.

Bonus unlockables are released as you play the game for extended periods of time (cumulatively). Every hour you play you will unlock an extra continue and every 5,10,15, and 20 hours you will unlock a bonus.

You can also unlock many items by beating the game with merely one credit.

You will start the game with three credits and earn one for every hour of play to a maximum of nine credits (six hours). Free Play mode is unlocked after seven hours.

Finish trial mode without using any continues to unlock the "Gallery 1" option at the "Appendix" menu. Alternately, accumulate at least five hours of total game play.

After finishing the game under any difficulty you will unlock the "Gallery 2" option at the "Appendix" menu. Alternately, accumulate at least ten hours of total game play.

Finish the game under easy difficulty without using any continues to unlock the "Sound Test" option at the "Appendix" menu. Alternately, accumulate at least fifteen hours of total game play.

Finish the game under normal difficulty without using any continues to unlock the "Game Mode" option at the "Appendix" menu. Alternately, accumulate at least twenty hours of total game play.