Enuou1000

A Japanese Peticom game maker. Has a large library of games that can be found here.

Some games require some extra CHR or other files that can be found here at the Japanese Smileboom site. (Click the present icon, and you'll see various links that lead to groups of downloadable QR codes in zips. These are used by other JP petit computer users, and of course are available for use by any Petit computer users.)

They also have a Youtube.