To provide a game machine using a game machine board housing case capable of reducing fraudulent unsealing.

A caulking member 287 is locked with a locking member 285 so that sliding movement of a box base 265 with a box cover 267 is impossible, and the locking member is movable together with the locked caulking member 287 in the direction of removal within a bottomed storage part 284 while the locked caulking member 287 is undetachable. With this structure, even if a fraudulent slender member is inserted into the boundary surface BL between the box base 265 and the box cover 267 at a position of a sealing member 280 to separate the box base 265 from the box cover 267 at the position, the locking member 285 is moved together with the caulking member 287 in a direction of removal within the bottomed storage part 284, and as a result, bending and deformation of a second locking pawl 285b of the locking member 285 can be reduced, and as the locked caulking member 287 is undetachable, the board box 263 can not be unsealed.