Dice and Decks Guild Hall

Extra Turn Games · app studio

We build the app for your game.

We're a small studio that makes companion apps and organized-play tools for tabletop, miniature, and trading-card games. We've shipped our own — now we build them for other publishers, stores, and creators.

Tell us about your game

What we build

Companion apps

Rules references, army/deck builders, card scanners, collection trackers — the everyday tool your players keep open at the table.

Organized play & store tools

Leagues, tournaments, and event management that stores and TOs can actually run — with the back-office to match.

Cross-platform & published

Android and iOS from one codebase, shipped to the stores, with the privacy and legal groundwork handled (you’re looking at it).

How it works

1. Talk

You tell us about your game and what players need. We scope it honestly — including what not to build.

2. Prototype

A working prototype fast, so you can hold the real thing before we commit to the full build.

3. Build & ship

We build, you review at every step, and we handle store submission, privacy docs, and launch.

4. Support

Updates, new content, and the back-office tools to keep it running after launch.

Tell us about your game

Send a few details and we'll reply by email. No obligation — we'll tell you straight whether an app makes sense.