This is a brand new box protector for Adventure Creator for Commodore 64. The system had a lot of games released for it in a wide variety of sizes. These may be compatible with other games however I recommend measuring your box and choosing the closest size I carry.
These measure 172x31x228mm. The game is not included and is pictured for illustrative purposes only.
These do fit other games however are not a perfect fit:
Electronic Arts big box (Prince of Persia, Airheart, Labyrinth) (8mm too wide);Sierra paperboard molded (a rare box type that includes Gelfing adventure, some versions of Learning with Leaper and some versions of Oil's Well) (snug fit, could be too tight for some collector's taste)