Q Billion Cartridge For Nintendo Gameboy Vintage 1990 Tested And Works

This awesome puzzle game was released 35 years ago this month in North America by SETA (not to be confused with Sega) Corp. Retro goodness for your Gameboy. Cartridge only. Please see the pictures for details. Let's take it back to 1990. Comes from a smoke-free, pet friendly home. Sold as is, please see photos before purchasing.