MTG Cube Builder - Design, Manage, and Draft Online
Everything you need to build, manage, and run your cube — in one dedicated platform.
MTG Cube Builder
Build, draft, and document your cube
CubeForge is an MTG cube builder for managing your list, drafting online, and keeping track of your design process.
Build and manage your cube with ease
Create, import, and refine your cube in a modern workspace built for iteration. Track the stats that matter, switch between views instantly, and manage the same cube together with your group.
Draft online with your friends
Spin up drafts in minutes, invite your friends, and play through your cube online. Start with built-in draft formats or create custom ones that match exactly how your cube is meant to be drafted.
Easily document your process
Capture your design goals, update notes, and explain changes as your cube evolves. The live editor makes it easy to keep your process readable without fighting raw Markdown.
Why Choose CubeForge?
Smart Cube Management
Your creative workspace for cube design. Track iterations, manage versions, and watch your cube evolve from initial concept to polished masterpiece.
Seamless Import
Bring your cube from anywhere - Cube Cobra, text lists, or spreadsheets. Import your existing work effortlessly and continue building your vision.
Collaborative Design
Work with fellow cube designers who share your passion. Collaborate on innovative designs, exchange ideas, and build extraordinary cubes together.
Document Your Vision
Every cube has a story and philosophy behind it. Share your design decisions, explain your themes, and help others understand what makes your cube special.
Discover Amazing Cubes
Explore a diverse collection of unique cubes - from classic formats to innovative designs. Get inspired by the creativity and passion of the cube community.
Comprehensive Analytics
See your cube from every angle — color balance, mana curves, archetypes, and more.
Powerful Cube Versioning
Save snapshots of your cube as it evolves. Compare versions, roll back, and track your design journey.
Live Draft Experience
Draft your cube online with friends — or fire up bots that actually understand your archetypes.
Custom Card Design
Add your own cards and homebrews. Make your cube truly one of a kind.
Featured Cubes
Recent new cubes from the community
Commander Cube
Curated commander cube inspired by the Commander Legends draft experience. Includes quintessential commander staples alongside several spicy sleepers which inspire creative drafting and inventive gameplay even in well-established archetypes.
Jumpstarter Cube
This Jumpstart cube uses custom packs from the excellent Jumpstarter project. Each deck represents a unique theme—from Bears and Goblins to Dungeon crawling and Morph tricks. Quick to set up and easy to play.
Onslaught Block Cube
A 300 cards block cube for the Onslaught block,
Frequently Asked Questions
Clear answers about what CubeForge is, who it is for, and how it fits into cube design workflows.
What is CubeForge?+
CubeForge is a web-based Magic: The Gathering cube management tool for players who want to build, iterate on, and maintain MTG cubes over time. It focuses on beautiful UI, smooth user experience, and a fully integrated workflow from cube list building to drafting to online playtesting.
Who is CubeForge for?+
CubeForge is built for the modern MTG player who wants one place to build cube lists, run drafts, and playtest online. It is designed for players and groups who iterate quickly, test often, and continuously improve their cube environment.
How is CubeForge different from other cube tools or spreadsheets?+
CubeForge is designed around ease of use and, even more importantly, enjoyment of use. Building and maintaining a cube is a long-term creative project. While many tools focus primarily on data and functionality, CubeForge focuses on the experience — making it intuitive, welcoming, and pleasant to spend time in. If you enjoy refining your cube over months or years, CubeForge is built to make that process feel smooth and rewarding rather than technical or overwhelming.
Can I use CubeForge for drafting?+
Yes. CubeForge includes a full draft simulator with strong support for real drafting workflows, including multiplayer online drafts. It also supports custom draft formats and pack-construction rules. You can build your cube, run drafts, and playtest in one integrated platform.
Can multiple users collaborate on the same cube?+
Yes. CubeForge supports collaborative cube management, so two or more users can work on the same cube together. This makes it easy for playgroups or co-maintainers to update lists, iterate, and keep a shared cube in sync.
Is CubeForge free?+
CubeForge is fully free. As the tool evolves, I may add optional ways for users to support my work on CubeForge.
Can I migrate my existing cube to CubeForge?+
Yes. You can import existing cubes from common sources, including Cube Cobra exports and spreadsheet-style lists. CubeForge is designed to make migration straightforward so you can keep your existing work and continue refining, drafting, and playtesting in one place.
Draft A Set
Pick a cube and jump straight into a draft.
Marvel's Spider-Man - Set Cube
Bloomburrow - Set Cube
Edge of Eternities - Set Cube
Cube is for everyone. Core features are free forever — because designing great cubes should never cost you.
Link with Dekki
Link your CubeForge account with Dekki and playtest your cubes with friends directly in your browser.
Use invitation code CUBEFORGE to create an account on Dekki
© 2025 CubeForge. Made with ❤️ in Japan, for the MTG community.
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Magic: The Gathering, card images, mana symbols, and all related intellectual property are owned by Wizards of the Coast LLC. CubeForge is not affiliated with, endorsed, sponsored, or specifically approved by Wizards of the Coast LLC.