Namco Museum Battle Collection cheats and cheat codes for Sony PSP

Galaga Arrangement:

Ship select:
Finish the entire game (the last level is level 6-5), then you can access to
the ship selection in Free Play mode. Now you can select a ship upgrade
before starting a level.

Getting better upgrades:
Let your ship get stolen, then let another steal your ship. Kill one, get
the power-up, then kill the other bug.
You should get an ultra upgrade. You can try it with different bugs.
Submitted by Wolf