A minor observation found today by Japanese Donders: For some reason if you play a cabinet that still runs Yellow ver. with a data card, you could play Negai wa Esperanto even if you did not purchase it from Rewards Shop (either one).そういえば今日イエローVerをカードありでプレイ時になぜか解禁してないはずの願いはエスペラントがプレイできるようになっていた。(すべてのカード未解禁状態)— まー(モブ)@連打重視 (@mbitosan1) April 2, 2018
That... is sorta random? Whether this is reliable is unsure, but we are reporting it to the English community anyway. (shrug)