BaBaBa
A card game that revisits Old Maid by changing how cards are collected and discarded. Sakamaki worked on product planning and game co-design; the regular edition was released in August 2026.
Players discard three matching characters rather than pairs, while the player left holding the three “Ba” cards loses. This creates tension both when drawing a needed card and when another player draws from your hand.
Created with Hayato Isogai and Risato Wakabayashi as 333. The regular edition uses large red, blue and purple characters and a package with radiating graphic lines.