Tippy Brim

A one-tap physics game where you push liquid past the rim and race surface tension. Hold the faucet to fill, then add drops one at a time as the meniscus shimmers.

Brimful — A one-tap physics game that puts the science of surface tension at your fingertips.

HOW TO PLAY

1. Pick one of three liquids in Practice mode, or take on a hidden liquid in Challenge mode
2. Hold the faucet to fill the glass to the rim
3. The faucet swaps for a dropper once the cup is full
4. Tap to release single drops and grow the iridescent dome
5. Hit "I'M DONE!" to lock in your score — spill, and the score resets to zero

TWO MODES ■ Practice — three liquids to master • Alcohol: weaker surface tension, smaller dome, fast-settling ripples. Beginner-friendly • Water: balanced standard • Syrup: stronger surface tension, taller dome, long-lasting ripples. Advanced

■ Challenge — 7 mystery liquids + random cup size • Viscosity, oscillation, and dome height change every round — drawn from 7 hidden variants • Cup size also rolls between XS / S / M / L / XL • Anti-repeat ensures no two consecutive rounds share the same liquid or cup size • Scoring is fair across configurations: bulge² × time multiplier × tap bonus

THRILL • Past 70% bulge, random air currents start rocking the surface • Idle long enough and the cup may spill on its own • In the dropper phase, score decays 3% per second after a 3 s grace • Faster taps boost the tap-bonus multiplier (×0.7 to ×1.30) • Challenge scores above 2000 are masked as "????" — you only see the truth when you cash in

VISUAL • Iridescent soap-bubble dome that catches pink, lavender, and peach light • Warm cream paper aesthetic with a glassy cup centerpiece • Custom physics engine renders the faucet, dropper, and droplets in real time • Meniscus clings to the rim, oscillates, and breaks with believable detail

DESIGN • Tap and long-press only — no shaking, no tilting • Fully offline. No network access, no ads, no in-app purchases • Bilingual JP/EN with preference persisted across launches