One Second Memory

One Second Memory is a visual attention game. A scene of coloured objects appears for exactly one second, disappears completely, and you answer one question about what you saw. Which object was in the top-left cell? What colour was the cat? How many red objects were there? What was immediately to the left of the dog? What changed between two scenes?

Every scene is built from a catalogue of clearly different objects placed on a 3x3 or 4x4 grid in named colours, and every question is checked against that scene, so there is always exactly one correct answer among the four options. Difficulty grows step by step: more objects, bigger grids, similar colours and shapes, and more demanding question types.

Four ways to play:
• Levels – 30 levels of five questions. Reach 60% to unlock the next one and collect up to three stars.
• Daily challenge – ten questions that are the same for everyone on that day, one scored attempt per day, and a streak to keep alive.
• Endless recall – the difficulty keeps rising until you make three mistakes. Beat your best score.
• Guided practice – choose a 1, 2 or 5 second preview, pick the difficulty, and get an explanation and an optional scene review after every answer.

Scoring rewards accuracy first: correct answers earn more on harder levels and on streaks, and a small time bonus is capped so speed can never outweigh a right answer.

Features:
• Free to play, no account, no in-app purchases
• Works fully offline – progress, scores, response times and streaks are saved on your device
• Nine question types including change detection and attribute combinations
• Statistics with accuracy by question type and recent rounds
• Light and dark themes, sound and vibration toggles, reduced-motion option
• Scalable text and screen-reader support that never reveals the hidden scene
• Contains ads: small banners on menu and result screens and occasional interstitials between rounds, never during a round

Suitable for casual puzzle players, families and anyone who enjoys visual attention games.

Recent changes:
Version 1.0.0 – first release. Levels, daily challenge, endless recall and guided practice; nine question types; offline statistics; light and dark themes.