Venture into dungeons with a huge party of your favorite Touhou characters! This is a dungeon-crawler RPG with an absurdly large party size! The dungeon-crawler RPG Genso Wanderer is now a game with an Oversized Party System that pushes the envelope of the roguelike genre! Now you can bring dozens of partners with you on your dungeon crawls, in addition to other quality of life improvements that make the game's systems and controls smoother than ever. Overwhelm your enemies with strength in numbers! Lead tons of your favorite Touhou characters at once and conquer the impregnable Lotus Labyrinth!

One day, on one of his scavenging outings to Muenzuka, Rinnosuke Morichika finds a curious device that drifted in from the outside world. The device turns out to be a machine called the WRS (World Replication System), which generates a playable game set in a cyber-world. Rinnosuke brings the WRS to Nitori Kawashiro for examination. Once Nitori activates it, it fulfills its intended purpose by generating the cyber-world Lotus Land. Sanae Kochiya and Tenshi Hinanawi happen to be there for this, and they log into the cyber-world to play this fancy new game. Little do they know that the cyber-world created by the WRS can also potentially spill over into the real world...