Instant Dungeon is a terrain set that’s magnetized for your convenience. They’re up on Indiegogo now and looking for funding.
From the campaign:
Instant Dungeon is a new way of perilous adventure modular setting.
Our Dungeon is very easy to transport and store
1 inch walls, universal & compatible with the all tactical rpg environments.
Magnetic walls in light but resistant resin, no dismount danger!
Create your own dangerous adventure in just one minute.