Escape the Cubicle.
Command the Dungeon.
Your 9-to-5 steals forty hours a week.
Tuesday nights belong to you.
Grim Portal gives dungeon masters everything they need to run paid homebrew campaigns — subscriptions, character sheets, dice, and automatic reminders, all in one realm.
BUILT FOR BURNT-OUT OFFICE WORKERS WHO STILL BELIEVE IN MAGIC
40 hours for the spreadsheet.
3 hours for the dragon.
You spend all week navigating office politics and passive-aggressive Slack threads. But on Tuesday night, you're the Dungeon Master — the architect of an entire world. Grim Portal exists so that those three hours are completely, gloriously yours.
Everything a DM needs.
Nothing they don't.
HOMEBREW CAMPAIGN HQ
Your world, your rules. Build and manage custom homebrew campaigns without shoehorning your story into rigid published modules. Full DM control from session zero to final boss.
PER-SEAT SUBSCRIPTIONS
Charge your players directly through Grim Portal. Set a monthly seat price, send the link, and get paid automatically — no awkward Venmo requests, no forgotten dues.
CHARACTER SHEET STORAGE
Persistent adventurers, accessible anywhere. Your players' characters live in the cloud — no lost notebook, no "I forgot to update my HP" at the start of every session.
BROWSER-BASED DICE
Roll d4 through d20 right in the browser. No physical dice required. Perfect for remote campaigns — everyone sees the rolls, no one cheats (probably).
AUTOMATED REMINDERS
Session reminders sent automatically to every player. No more chasing people through group chats. They show up. You run the game. The dungeon master's job is to DM, not to herd cats.
ONE DARK REALM
Everything lives in one place. No cobbling together Discord, Google Drive, Venmo, and a shared spreadsheet. The portal handles it all, so Tuesday night is pure storytelling.
Choose your seat at the table
Less than two rounds at the bar — for a full month of adventure.
Adventurer Seat
- ✦One player seat in DM's campaign
- ✦Browser-based dice rolling
- ✦Session reminders
- ✦Campaign access
Hero Seat
- ✦Everything in Adventurer
- ✦Priority character sheet storage
- ✦Character history & versioning
- ✦Priority support
Legendary Seat
- ✦Everything in Hero
- ✦All features, forever
- ✦Exclusive legendary content
- ✦Early access to new realms
NO SETUP FEE · AUTOMATED BILLING · CANCEL ANYTIME
“The dungeon master is the last true creative director. You build entire civilizations before breakfast, commit genocide on fictional kingdoms, and somehow still make it to standup at 9:15. You deserve better tools.”— THE FOUNDERS OF GRIM PORTAL, WHO ALSO HAVE DAY JOBS
Your campaign.
Your terms.
Join the waiting list. Be first to open the portal when we launch.
✦ BEGIN YOUR CAMPAIGN ✦