Chalvo 55 - Super Puzzle Action (Japan) [En by LameBoy v1.0] is a fan-translated version of the original Japanese game. This implies that the base gameplay remains consistent with the original Japanese release, but with English language support added via a fan translation patch. The translation patch is made by LameBoy, and therefore the gameplay experience should be identical to the original, only differing in language. Further details about the original developers and publishers of the original Japanese game would require additional research.

Chalvo 55 - Super Puzzle Action (Japan) [En by LameBoy v1.0]

Chachamaru Boukenki 3 - Abyss no Tou (Japan)