Maxwell Cadman Scoring you can trust
Every combination — ones, fives, triples, straights and specials — resolves deterministically, and the in-game rules screen lets a player check any result against the dice they kept.
← Selected work
Free on Android
Riverboat Zilch
Push-your-luck dice done as a polished modern classic. Keep the scorers, build the pot, and decide when to bank — solo against distinct rivals, around one phone, or on connected tables for two to six players.
- Role
- Design, engineering, online service and release — independent, end to end
- Surfaces
- Android · Offline play · Online tables
- Status
- Live on Google Play
- Stack
- Unity 6 · C# · Server-authoritative multiplayer · Android AAB · iOS TestFlight
01
The design problem
A familiar game has nowhere to hide.
Everyone who plays a 10,000-style dice game already knows the rules, so the product cannot win on novelty. It has to win on feel, fairness and the quality of the table — and any scoring mistake is immediately obvious to the player.
Rivals worth meeting
Four AI regulars with distinct risk appetites turn the solo voyage into a series of opponents rather than a string of score targets.
Tension in the hand
Flick, settle, select, bank. The whole interface exists to make one question — stop or roll again — feel physical.
Fair by construction
Cosmetic dice and felts never affect odds, and connected tables use preset reactions instead of free-form chat.
02
Engineering and release
Exhaustively verified, then made to survive a bad connection.
Because the scoring rules are finite, they can be proven rather than sampled. Every possible roll of six dice — all 46,656 of them — is evaluated against the scoring table in test, so a scoring regression cannot reach a build.
Exhaustive scoring tests
All 46,656 six-dice outcomes are verified against the expected scoring result, making the rules engine provably correct rather than spot-checked.
Server-authoritative online
Match state lives on the service, not the client. A dropped connection reconnects into the same match instead of forfeiting it.
Recoverable guest profiles
Online play needs no account: a pseudonymous installation identity carries ratings and history, stored as a hash rather than personal data.
Offline is the default
Career, Quick Match, Daily Roll and Pass & Play all run with no connection and no account at all.
Unity 6C#Server-authoritative stateWebsockets
Exhaustive rule testsAndroid AABiOS TestFlight
Verified delivery
Published on Google Play. Ready for the next roll.
46,656dice outcomes verified in test
11river ports in the career
2–6players on connected tables
Freecosmetic-only, no paid advantage
Riverboat Zilch is available free on Android. Seven rival styles span four regions and eleven Career Voyage tables, alongside Quick Match, Pass & Play, a shared-seed Daily Roll and online games for two to six players.
AndroidLive on Google Play ↗