*'''''[[Gradius]]''''' ([[TurboGrafx-16|PC Engine]]) – Pausing the game and then enter the code {{key press|up}}{{key press|up}}{{key press|down}}{{key press|down}}{{key press|left}}{{key press|right}}{{key press|left}}{{key press|right}}{{key press|II}}{{key press|I}} to activate full options, missile, and shield. |
*'''''[[Gradius]]''''' ([[TurboGrafx-16|PC Engine]]) – Pausing the game and then enter the code {{key press|up}}{{key press|up}}{{key press|down}}{{key press|down}}{{key press|left}}{{key press|right}}{{key press|left}}{{key press|right}}{{key press|II}}{{key press|I}} to activate full options, missile, and shield. |