Sleeeper

About this app

Made for a clear purpose.

Yo-yo tricks. One thumb. Real string physics.

Sleeeper is a skill-driven arcade game built around the movement, timing, and vocabulary of real yo-yo play. Hold to lower the yo-yo, trace the prompted motion, and release inside the timing window. Every clean landing builds the chain. Every miss asks you to regain control.

REAL STRING PHYSICS - A live Verlet-rope simulation links your thumb to the yo-yo through a chain of constrained points - The string swings, tightens, and transfers movement instead of behaving like a canned animation - Timing, motion confidence, release angle, and trick-specific gesture rules all contribute to the result

42-TRICK CODEX - Learn a catalog spanning foundation sleepers, classics, loops, picture tricks, string tricks, and advanced combinations - Search by name, family, difficulty, or motion - Read performance cues, timing windows, cultural notes, and mastery statistics for each trick - Track repertoire coverage and progress across every trick family

SIX WAYS TO PLAY - Trick Show: follow a curated beginner-to-advanced program - Endless Flow: survive an escalating stream of tricks - Daily Chain: play the same deterministic 25-trick set as everyone else that UTC day - Practice: choose one trick and work without pressure - Sprint: score as many clean tricks as possible in 60 seconds - Gauntlet: climb five difficulty tiers with limited lives

SESSION FILM ROOM - Grade a completed run using hit rate, chain control, pace, and repertoire - Compare the selected run with your recent personal baseline in the same mode - Identify the highest-value trick to repair from your saved mastery record - Generate a focused drill prescription using the real trick catalog - Save private reflections and one cue for the next session - Share a coach-ready summary while keeping saved notes on your device

PRACTICE AND PROGRESSION - Use the Practice Lab to find the trick family holding you back - Build custom warm-up sequences and focused trick challenges - Unlock cosmetic yo-yos through play, with no currency store or paid packs - Review score trends, personal records, run history, daily history, and 37 achievements

ARCADE PRESENTATION Neon stage lighting, a responsive crowd, synthesized effects, haptics, and a procedural soundtrack react to the run without requiring downloaded content.

PRIVATE BY DESIGN No account. No ads. No subscriptions. No in-app purchases. No analytics or tracking. Runs, mastery, achievements, progression, and private reflections stay on the device. Game Center is optional for scores and achievements.