Don't Spill!

Don’t Spill! is a fast, turn-based Snapchat mini-game: tilt your bottle to fill the glass, but don’t overflow. Outplay a friend in quick rounds, with a clear winner and instant replay.

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Don’t Spill! is a turn-based Snapchat Lens game where two players take turns carefully pouring into a shared glass. Hold to pour, release to stop—push your luck, but if you overflow, you lose, and the other player is shown as the sole winner.

Features

  • Turn-based multiplayer with a shared glass level that persists across turns.

  • Hold-to-pour mechanic with smooth tilt animation and clear water meter feedback.

  • Overflow detection that can exceed 100% to make the losing moment obvious.

  • Winner-only Game Over screen (only the victor is shown).

  • Continue/Restart flows designed to match Snapchat’s capture + turn progression.

  • Lightweight, mobile-friendly UI over the camera feed.

Inspiration

  • Social media challenge videos where friends take turns doing “don’t spill” style challenges together, escalating the tension for fun and bragging rights.

  • The idea of a snackable, social mini-game that fits Snapchat’s fast back-and-forth sharing.

What it does

  • Player 1 pours into a shared glass and ends the turn with a snap.

  • Player 2 receives the same glass state, decides how risky to play, and pours next.

  • The first player to overflow loses; the other player is declared the winner.

  • Players can restart and replay quickly, encouraging rematches.

How I built it

  • Designed the 2D UI and bottle/glass visuals in Figma and imported them into Lens Studio with ScreenTransforms and scene objects.

  • Implemented a simple state machine (idle/tilt/pour/return/gameover) to control animation, pouring, and scoring.

  • Used global shared variables to sync glass level, game-over state, and winner between two devices.

  • Tuned performance by minimizing startup work and limiting per-frame updates to only when needed.

Problems

  • Debugging was a pain: Lens Studio would crash when I tried to inspect certain debug states, so local debugging wasn’t reliable.

  • To properly test turn-sync behavior, I had to publish repeatedly and debug with two phones and two accounts.

  • Sadly, it couldn’t realistically be done without publishing—hopefully Lens Studio adds a smoother multiplayer debugging workflow soon.

Accomplishments that you are proud of

  • A responsive, intuitive hold-to-pour mechanic that feels good on mobile.

  • Clean winner-only end screen that makes results clear and shareable.

  • A complete turn-based experience that feels native to Snapchat’s capture-and-send flow.

What’s next for Don’t Spill!

  • The mechanic can be re-skinned for any beverage—coffee, soda, energy drinks, milkshakes—without changing the core game.

  • It’s highly brandable and ready for commercialization: custom bottles/cups/UI for campaigns, from Starbucks-style seasonal cups to major beverage launches and limited-edition promos.

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