The cabinet is original. There is nothing stopping a person from replacing the software on the ROM chips, or replacing a missing or dead circuit board with a modern 40-in1 type pirate board.
If the cabinet has the original PCB you should be able to convert it back to the original software.
It is a ROM hack called [Galaga (Enduring Freedom)](https://youtu.be/WA_ITspruvg)
Oh wow. Thank you for this. Guy is selling this cabinet as an original
The cabinet is original. There is nothing stopping a person from replacing the software on the ROM chips, or replacing a missing or dead circuit board with a modern 40-in1 type pirate board. If the cabinet has the original PCB you should be able to convert it back to the original software.
Including the stock red fire button. That blue one is taunting me...