I just picked up a project Mousin' Around and upon inspection discovered red lamp boards under the playfield. I'm assuming this means it's a prototype / test game?

Also - does anyone know of any other differences these may have had? Nothing on the playfield jumped out at me as being different.

Any info would be awesome!

Not my pin in this link (unfortunately) - but has the same red boards -

http://www.treasure-cove.net/Mousin%20Around.htm

Was some of the only info I could find on test / prototypes

Interesting - do you also have an X in front of your serial #?

Well, there you go - mine may not be a test game, haven't been able to check the serial # yet. But hey, it's still a Mousin around!

Most of my boards are also stamped "test 7" does that mean anything? And I have those orange tags similar to the ones on doughslingers, they also are stamped test on the back. My first system 11, so maybe this is common?