If you love modding or customizing Dungeon Master as much as I do, you've likely run into the same issue different tools to download that rely on outdated Windows libraries !
So I decided to create another way to do it Dungeon Master Tools — a single, cross-platform web application!

It runs directly in your browser with zero setup, multiplatform while combining all core editing features into one interface without installing old dependencies or runtimes.
Key Features of Dungeon Master Tools:
Level Editor:
• Create, delete, reorder, and modify map levels effortlessly.
• Intuitive Drawing: Switch easily between single tile placement and area/fill tools for rapid editing.
• Contextual Erasing: Simply hold down the right mouse button to erase tiles using the current tool mode (single tile or area).
• Photoshop-style Layer Visibility: Toggle the display of tiles, creatures, items, sensors, and decorations on or off to clean up your view while editing.
• Onion Skinning for Stairs: Overlay outlines and stairs from the level directly above or below your current view, making it effortless to align stairs correctly!
• Edit characters, items, creatures, levels, and save states in one unified hub.
• Auto-Detection: Automatically identifies the target platform format upon loading (Atari ST, Amiga, PC, Apple II).
• Built-in Guidance: Every tool includes tooltips explaining each option and setting.
Little videotutorial for create a blank template https://youtu.be/lLOwicQbUFg
Please give it a try and share your feedback, bug reports, or sample files (dungeon.dat, graphics.dat, save files) across various formats and versions to help refine compatibility!
Have fun!
