Fantastic Frontier is created as a lighter version of Dungeons & Dragons, with inspiration taken from Blades in the Dark, Darkest Dungeon and the West Marches concept. The game is intended to be played in a sandbox, where every session different people can attend. It's all centered around a village, which players can upgrade over time and where they can benefit from the facilities when they're not at the table.

The players are interchangeable, like an MMORPG. Sometimes Bob and Sally play and at other times they are not available, so Jack and Amy play. Adventures preferably only last one session, but at times they are continued on a later date when the adventure is too epic for just 4 hours on a saturday night.

All characters fare from the same town, referred to as the Homestead. Some groups would give the town a name, like Westridge or Viriskali. Others don’t bother with it, they only care for what can be done in town. Buildings in the town grant buffs to the party when bought and used, others just provide the players with equipment in exchange for gold.

When a group of adventurers is assembled and the town disappears over the horizon, a frontier ready to be explored opens up. The players move over a map, going to a destination they thought looked interesting. On their way there they may come across a small shed where a witch lives, or maybe they stumble upon a cult performing some demonic ritual. A lot could happen on their travels. One thing is for sure though, it will be a good story to tell back at the tavern.