R-Types
Level Select:
Press L2 ten times and R2 ten times at either the R-Type or R-Type
II option at the title screen. Press Start while playing to access
any level or view the FMV sequences.
All weapons:
Press Start to pause game play in R-Type or R-Type II. Hold L2 and
press Right, Up, Left, Right, Down, Left, Up, Right followed by one
of the following buttons for various weapons: Triangle, Square, X,
Circle, or R1.
Extra credits:
Repeatedly press Select at the title screen of any R-Type game to
get up to 99 credits. This may also be done at the countdown on the
game over screen to continue.
Slower Ship:
Pause the game then hold L2 and press Right, Up, Right, Up, Down,
Left, Down, Left, X.
Faster Ship:
Pause the game then hold L2 and press Right, Up, Right, Up, Down,
Left, Down, Left, Circle.