Cheat Codes:
Activate the following cheats by entering the corresponding codes:

CHEAT FUNCTION – CHEAT CODE
Invincibility – Press Up(2), Down(2), Left, Right, Left, Right, Square, Start at the credits screen.
Disable ship inertia – Press Triangle(4), X(4), Square, Start at the credits screen. Note: This code does not work in v1.0.
Full overdrive – Press Down, Left, Up, Right, Triangle, Triangle, X(2), Square, Start at the credits screen.
High speed – Press Triangle, X, Square, Left, Right, Left(2), Up, Square, Start at the credits screen.
Maximum money – Press Left, Right, Left, Right, X, Right, Triangle(2), Square, Start at the credits screen.
Slow motion – Press X, Triangle, Square, Right, Left, Right(2), Square(2), Start at the credits screen.

Faster space bucks hint:
Do Helyix and Blattar VI first, then get the Remnant Vacuum for 50,000 space bucks. When you play Survival mode, the space bucks will be attracted to your shop and thus you’ll gain them faster.