GreyBox is the collaborative planning workspace for game studios — map gameplay flow, sketch worlds, track bugs, and shape your design together, all before a line of engine code.
No engine required · Built for Unreal, Unity & Godot teams
From the first idea to a production-ready design doc.
Map gameplay loops & systems with node graphs.
Freeform whiteboard for quick ideas & wireframes.
Milestones, releases & production timeline.
Log, triage & assign issues across the team.
Living GDD — mechanics, lore, systems.
Lore, factions, characters & relationship maps.
Branching NPC conversations & choices.
XP curves, loot tables & currency tuning.
Concept art, models, audio with versioning.
Kanban, sprints, dependencies & swimlanes.
Real-time presence, comments and @mentions keep everyone in sync. Studios, games, tools and boards stay organized so nothing gets lost between concept and ship.
Start greyboxing your next game with your whole team today.
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