Sleeeper

Master 42 real yo-yo tricks with live string physics, six play modes, Daily Chain, mastery tracking, and a private Session Film Room.

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.