The Lower Glass by hat70128

The Lower Glass is a six-night identification game set in a quiet, impossible aquarium. One fish is yours; the other is a copy. The true fish has a split tail and three gill marks, while the copy has a round tail and one mark. Observe the moving tank, select the left or right fish, and feed it. Correct feeds advance the watch; three mistakes end it. Four inspection-lamp charges give a clearer view across the whole run, so players can choose when to spend them. The fish may exchange places between nights. A full watch ends after six correct feeds; Reset Tank starts a fresh run. The current night, lamp charges, mistakes, and fish state are stored locally so closing the popup pauses rather than erases the game. The interface and rules are entirely in English. No account, external service, advertising, or network access is required.