Prevent Scope Creep
Write the MVP once so “nice-to-have” features stay out of the critical path.
A solo team cut three systems after the GDD made the vertical slice explicit.
Create professional Game Design Documents entirely in your browser. No login. No AI required. No installation.
# Game Design Document: Ashen Depths
## Core Concept
Explore a living cavern that rewrites itself as you reclaim lost abilities.
## Gameplay
Explore → Fight → Unlock ability → Backtrack → Discover
## Narrative
A scavenger descends into a sealed mine and finds the mine is conscious.
## Technical Requirements
Godot 4 · PC + Deck · Save slots · Controller-first
Progress
0%
Reading
1 min
Saved
Not saved yet
Live output
# Game Design Document
## Core Concept
## Gameplay
Your document will appear here.
Fill a section — the preview updates live.
Click a genre to fill the builder instantly.
Why experienced teams never skip one.
Write the MVP once so “nice-to-have” features stay out of the critical path.
A solo team cut three systems after the GDD made the vertical slice explicit.
Art, design, and engineering share one source of truth instead of chat archaeology.
A four-person jam used the doc as standup checklist — zero “I thought we meant…” debates.
Decisions made early mean fewer mid-sprint redesigns and blocked tickets.
Level designers blocked rooms from locked abilities listed in Progression.
Catch mismatched fantasy, tech, and monetization before assets are sunk cost.
A studio killed an online mode after Technical Requirements made the budget clear.
Idea → level → art → collision → audio → progression
GDD Generator
You are here
Level Generator
Generate seeded 2D levels and export them as engine-ready tilemaps.
Sprite Sheet Packer
Pack animation frames into a padded atlas with a JSON data file.
Autotile Generator
Build a full 47-tile terrain set from two source tiles.
Auto Hitbox
Trace a sprite's alpha into a collision polygon automatically.
Collider Simplifier
Reduce collision vertex count without changing hit behaviour.
Retro SFX
Synthesize 8-bit jumps, coins and explosions in the browser.
XP Balancer
Model level curves, gold flow and stat progression.
Loot Simulator
Verify drop rates with Monte Carlo simulation before shipping.