Every crypto casino runs a crash game. Almost none can prove a round was fair. The versions that put things on chain usually bury the fun under wallet prompts and gas anxiety. Players get to pick between trusting a black box or fighting the blockchain.
Put the entire game on chain without making it feel like a blockchain product. Every crash point provable. Every bet instant. And make it social, because watching a multiplier climb alone is only half the game.
HashCrash started as a hackathon build in the Abstract ecosystem. I owned every pixel from that first weekend to the live product: the game screen, wallet onboarding, bet and cash out states, the social layer, the design system. One designer, a small crew of engineers, and a game that found its players fast.
In player volume, three months after launch. HashCrash started at exactly zero the day it shipped. No existing player base, no marketing budget. The loop brought people in and the design kept them playing.
Born in a weekend. I designed the core round loop and a playable interface fast enough to demo, rough enough to rebuild.
We rebuilt for mainnet. I redesigned onboarding around the Abstract wallet so a first bet took seconds, not a tutorial.
The chat sat inside the game, so feedback arrived in real time. I iterated live with the community watching.
Volume grew week over week. I kept pace with new features: round history, verification UI, social profiles.
A crash round is a few seconds of pure nerve. The interface has one job: build that tension, then resolve it without a shred of ambiguity. Every design decision on this screen answers to those three beats.
A new round opens every few seconds. Players stake before liftoff, so the bet bar had to feel like a game controller rather than a transaction form. One tap, stake locked, eyes up.
The candle rises and every player watches the same number. The UI goes quiet here on purpose. No chrome competing for attention. The multiplier does the talking and the cash out button stays under your thumb.
The candle burns and whoever stayed too long loses. Losing had to feel dramatic but never unfair, so the crash state shows exactly where the round died and links straight to its on chain proof.
Built on Abstract, the game uses its global wallet so players approve once and then just play. I designed onboarding to front load everything scary into a single moment, then never interrupt again. A first bet lands in under a minute.
Blockchains confirm on their own schedule and a live game cannot wait. I designed optimistic states for bets and cash outs, with clear pending and confirmed signals, so the game never stalls while the chain catches up.
I pioneered X account integration inside the game, so players chat and taunt under their real handles while the candle climbs. Big wins post publicly. The crowd became the retention engine no feature could match.
Every crash point derives from a block hash plus a round salt, so nobody running the game can rig it. I designed the verification flow to be one tap from any past round. Trust stopped being a promise and became a feature.
HashCrash taught me to design for tension. Most products try to reduce stress. This one manufactures it on purpose, round after round, and the interface has to hold that energy without ever feeling unfair. That balance shaped every state on the screen.
It also proved that chain constraints are design material. Block times, gas, wallet approvals: each one looked like a limitation until it became a decision. The moments where HashCrash feels most polished are the moments where the blockchain is doing the most work.
And the numbers made the strongest case of my career so far. Zero to $2.5M in player volume in three months, with one designer on the team. When the loop is right and the friction is gone, players do the rest.