｢Fortune Summoners Plus～Arche's Wondrous Labyrinth～｣ is an expansion pack that adds 2 functions 『Arche's Wondrous Labyrinth』 and 『Arche's Arena』 to the main game of ｢Fortune Summoners｣.

Arche's Wondrous Labyrinth

This gamemode lets main characters to explore a dedicated region, Mysterious Labyrinth. The labyrinth is randomly generated and presents oppurtunities for obtaining items which only can be found in the region. Save data cannot be carried over between the main story and this gamemode. Expected playtime is over 12 hours.

Arche's Arena

In this gamemode, characters fight against enemies falling from the sky. The goal is to gain score as much as possible within the limited time by defeating enemies and maintaining combos. There are two submodes, one being a normal play, the other making any enemy would get killed by a single hit. You can upload your score and compete with other players for the best score. You are required to submit your user ID to do so.