The game’s save-anywhere system (outside of battles) is perfectly suited for portable play. You aren't locked into 2-hour boss gauntlets.
The game is structured around expeditions. You enter the labyrinth, explore as far as you can, gather resources, and return to town before your lanterns burn out. This loop is ideal for a portable mindset. You can play for 20 minutes on a bus ride, map out a few corridors, and save your progress, or settle in for a three-hour session on a flight. labyrinthofrefraincovenofduskrar portable