This is Marble Course V2!! Here are some differences: 

Starting base is round

3 Round slots for marbles (file for marbles can be found on the previous version)

Two separate ending lines. 

Do note that this print may require a relatively larger printer than the A1 Mini if printed at full size, and yes, I am using the P1S plate in the slicer, but it should also fit the print bed of the A1.