A two-duck army building games 🦆🦆
We're a tiny indie studio making games that are quick to pick up and hard to put down — from local multiplayer racers and arcade cabinets to quirky little games you can play right in your browser. No fuss, no fine print. Just fun.
MandelDuck is Christian & Mayu Moss — a two-duck indie studio making honest bitcoin games (and the occasional arcade cabinet).
Indie game dev and bitcoin nerd. Jamming real bitcoin into games since 2014, back when everyone said it couldn't be done. Co-founder of ZBD and a firm believer that the best way to learn bitcoin is to earn it while having fun.
Designer and Japanese translator. Shapes how MandelDuck looks and feels, and bridges our games and words between English and Japanese — bringing bitcoin gaming to Japan. 🇯🇵
The first mobile game in the world to pay out real bitcoin to players. Swing the monkey, earn sats. Covered by CoinDesk — and back on the App Store today.
Real-world AR bitcoin treasure hunt — geocaching with sats before Pokémon Go. One of the first iOS games with actual bitcoin, and an early pioneer of in-game assets on Counterparty.
Bitcoin & Lightning payments built for games. Helping developers pay and reward players in real bitcoin, at scale.
Ran a fully validating Bitcoin & Lightning full node on a stock Android phone — and your TV — for free, no special hardware. Read the write-up →
Bitcoin gaming events & esports — showcasing games built on bitcoin and the Lightning Network. Watch on YouTube →
Building plug-and-play bitcoin games for conferences, bitcoin hubs and venues — download, connect ZBD or LNbits, and let the sats fly.
Walk into Van Gogh's paintings and go cat-spotting. Start under the swirling sky of The Starry Night, then step onto the Café Terrace, the banks of the Rhône, into The Bedroom and The Night Café, out to the Wheatfield with Crows, the Irises and The Sower’s field — or shrink to cat size among the Sunflowers.
The cats hide somewhere new every time you play. A full 3D first-person world that runs right in your browser — every brushstroke painted live — with real meows and each painting’s own sounds. Mouse & keyboard or touch. More paintings coming soon.
▶ Step into the paintings
Mei is hiding somewhere in the summer countryside. Play Satsuki, with Totoro padding along beside you, and search the house, the rice paddies, the shrine and the giant camphor tree to find her.
Everything is spoken in Japanese — 「もういいかい？」「まーだだよ！」, villagers greeting you in the lanes, Mei giggling from her hiding place — made for our son to hear Japanese spoken. Runs in your browser and on iPad (Add to Home Screen). A non-commercial fan tribute; not affiliated with Studio Ghibli.
▶ あそぶ · Play
An embroidered escape from the Battle of Hastings. Play as Harold Godwinson — jump, duck and shield your way through 60 seconds of Norman arrows and stitch a different ending.
Runs right in your browser, no download. Hand-animated straight out of the Bayeux Tapestry, keyboard and touch controls included. History is written by the victors — this time it's stitched by you.
▶ Play in your browser
A real, four-player bitcoin arcade cabinet I built from scratch — loaded with my games: BTC Rally, GoldenPie, Brawl and more.
Powered by ZBD — drop in, grab a controller, and play to earn real sats. Built to drop into conferences, bitcoin hubs, bars and meetups so anyone can experience bitcoin gaming hands-on.
Local multiplayer kart-style racer. Everyone pays a few sats to enter, winners take the pot. Faucet mode too. Powered by ZBD or LNbits — perfect for events & bitcoin bars.
Download on itch.io
An Electron launcher that drops bitcoin rewards into retro N64 classics (hi, GoldenEye 007). Get a kill, watch the sats rain. Anyone can download and set it up.
View on GitHub
The OG. The monkey-swinging arcade game that started it all in 2014 — the first to tip players in real bitcoin. Back on the App Store with ZBD Lightning rewards.
Follow for updates
Hunt and plant real bitcoin treasure in the real world. A geocaching treasure hunt with sats and Counterparty tokens — a true bitcoin gaming original.
Read the storyA decade of jamming real bitcoin into games — newest first.
Independent studio for hire — available to studios, startups and events worldwide.
We take on consulting engagements drawing on 15+ years shipping games, building real bitcoin payment systems, and design & Japanese localization. Engaged as an independent studio on a business-to-business basis.
Remote or on-site. Get in touch with what you're building and we'll reply with availability.
