Inner Datum

Closed pre-alpha

Inner Datum is a co-⁠op turn-⁠based roguelike that runs inside a Discord voice call, so you and your friends can talk through every move.

Inner Datum’s overworld, with a character on a moor of hedgerows beside a stone road and the party panel, case log and action bar on screen.
A player on the Alderbrook Moor beside a cobbled road, with the turn state along the top and the case log at turn 627. The art in this closed pre-alpha build is still being replaced.

You play with friends who are already in the same Discord voice call. One of you starts the game, and the others click in to join. It’s set in a rain-soaked clerical city of our own, where a records system overwrites people, and the overworld includes the Alderbrook Moor.

A turn only resolves once every player who owes a decision has made one. That gives everyone room to talk, and the moment before a door opens tends to turn into a short chat about who gets the doorway. Fights involve everyone on the level, including the friend who wandered off to the far end of it. When nothing is fighting you, exploring is free, so you can wander at your own pace.

A player who drops to zero health is Downed, and a five-turn countdown appears that the whole party can see. This is usually when someone starts calling for help. An ally who reaches them in time spends a turn standing them back up at a quarter of their health, and if the countdown runs out first, that player is Erased.

How it plays

  • Turns that wait for every player who owes a decision
  • Played with friends inside a Discord voice call
  • A five-turn countdown to reach a Downed ally
  • Fights that involve the whole level, with free exploring in between
  • A rain-soaked clerical city with a records system that overwrites people

Where it stands

Inner Datum is in closed pre-alpha, and fewer than ten people play it right now. There’s no public server, and there isn’t anything to sign up for.

About the source code

Inner Datum’s code is published under the GPL 3.0 or later, because the game began as a partial port of the T-Engine4 roguelike engine. The art and writing are ours, as is the setting, and that license doesn’t cover them.