Constellation Pairs

Constellation Pairs is a memory and logic puzzle game set in an astronomical theme. The player’s goal is to match pairs of cards: one card shows the star pattern of a real constellation (dots and connecting lines, like a star map), and the other shows the constellation’s name. Each turn, the player flips two cards; if they form a correct pair, the cards stay face-up; if not, they turn back. The level is complete when every constellation is matched with its name.

The game uses ten real constellations: Orion, Ursa Major, Ursa Minor, Cassiopeia, Cygnus, Scorpius, Leo, Taurus, Andromeda, and Aquila. The visuals are inspired by professional star maps and observatories: dark backgrounds, white and muted cyan stars, thin constellation lines, and clean typography. The tone is calm and elegant, with no cartoon or playful style, and no music—only optional sound effects.

Progress is structured in ten levels with increasing difficulty. Early levels use fewer pairs and a longer time to memorise the cards; later levels add more constellations, larger grids, and shorter reveal time. Completion is celebrated with a short “Observation Complete” summary showing time and number of attempts, followed by the option to continue to the next level or return to level selection.

The app includes a one-time onboarding screen (“Match the stars with their true names”), a home screen with progress and shortcuts to play, level select, and achievements, and an achievements screen with goals such as First Match, Sky Reader, Stellar Memory, and Astronomer. All progress—onboarding state, unlocked levels, completion stats, and achievements—is saved locally on the device (no SharedPreferences; file-based storage) and restores after the app is restarted.

The experience is designed to be responsive on phones and tablets, with smooth card flip animations and a consistent night-sky aesthetic. Constellation Pairs is suitable for players who enjoy memory games and a restrained, astronomical visual style.