Every hundred years the world is plagued by an influx of players and their actions. As the world readies for another batch of players something is off. A new influx of beings from some other world is starting to show up. Fortunately, it seems they mostly want to return home. Hopefully, a certain tomb's crazy npcs don't give them a reason to stay.

Betrayal. Despair. The endless void of the Boundary. A girl known as Natsuki Shirogane has found herself in a new world, with new rules, and a new livelihood. How will she manage to survive in a world filled with youkai? Will her past catch up to her?

(Touhou x Factorio) In the Fantasy Land known as Gensokyo, "Magic" and "Science" are regarded as one and the same. Therefore, there is no difference between a "Magician" and an "Engineer".

"Physics is coming to an end. Our world was already rapidly progressing into an age of explanations and philosophy." What might have been true years ago no longer is. High above the ravaged Earth stands the last bastion of research into the unknown: the Low Orbit Station Rhadamanthus. Then it's only natural that the Hifuu Club would find their way to such a place!

Ever since she was born, Sara Kujou was the only tengu she'd ever know. That changes when she and Itto land in a mysterious land full of other tengu.

Alice and Leni spend some bodily function night with each other.

Farting girls from Touhou happen to fit well within the confines of Fortnite!

At this point you can already expect stupidity from both of these properties.

In just 5 years post-Black Ships' arrival, Japan faces monumental change. Amidst Bakumatsu's turmoil, Assassin Léopold Lafleche navigates political unrest and supernatural emergence. Modern descendant Callum Lynch delves into this blend of history and fantasy, exploring intertwined worlds through the Animus.

Messing around with brown bricks gets Inspector Gadget into the Touhou world.

Banjo and Kazooie realize something when they're going through the Touhou world again.

AU. Taylor Hebert died in the locker. Her soul get flung across the multiverses and landed in the demonic world of Makai. Revived by the creator of that world, Taylor now must learn how to become A Perfect and Elegant Maid under guidance of her sword-throwing senior to serve her mistress as per agreement of her revival. Cross-post with SB.

Another stinky day in the Scarlet Devil Mansion before it blows up yet again from anime shenanigans.

Twenty-one year old Reimu Sanchez has to deal with a myriad of things in her life. Ranging from the dysfunction nature of her family, to her sci-fi shenanigans of her paternal grandfather, to the mystical nature of youkai. How will she fare in her own chaotic life? (Touhou belongs to Team Shanghai Alice, Rick & Morty belongs to Adult Swim. Crossposted on AO3.)

Meiling Hong farting causes a literal stink for Space Ghost, who finds it hard to concentrate on watching his shows! No one asked for this story. That's why I wrote it...

A Spartan never goes quietly into the howling dark to never return, left on the dying planet Reach a Lone Wolf will make peace with his life, and be put into the chance of a new life. Boundaries rift open and a Ghost drifts among Youkai, now to find his new place in a Fantastical Land of Status-Quo. His arrival may herald a new coming incident, but his abilities will prove vital.

A terrible curse engulfs the entire Trodain kingdom, affecting everyone in it... except for one lucky survivor. Join Eight, a young guardsman, on his journey through his point of view as he seeks the one responsible for the curse while gathering new allies with him, with eight of them being from an entirely different world, nonetheless! A truly epic quest is about to begin!

Después de que lo persiguieron por crímenes que no cometió Sonic consiguió escapar de Mobius a un lugar desconocido y decidió quedarse allí por un tiempo para relajarse y calmarse, allí conoce a la Ermitaña de un brazo:Kasen Ibaraki. Sonic The Comic Online x Touhou Project crossover.

Going to the circus ends up stinking more for the Touhou girls than their farts.

A Mega man Zero/ Touhou Project/ SMT: apokalypse crossover nobody asked for... and the sequel to Identity quest. Falling through a crack of a dark eternity with nothing but the pain and the carousel of agony, Zero land in Yukari's awaiting arms. Waking up from a dream filled with glorious bloodshed, knowing nothing bout life and why he kept fighting, Omega will learn how to live.

naruto is taken to Gensokyo by yukari yakumo and trained to become the best ninja in all history, what is her reason? and why is the kyubi so afraid of her?

Aya finds a photo, and, like the goofy goober she is, she decides to show the whole class.

Two honoured ones become bound together, causing a merger to be born between two worlds. Gojo Satoru tries to save Hakurei Reimu from Gensokyou, and everyone is worse off for it. His equal will always be a mountain away. Or, Gojo Satoru tries to be a hero in a story where there is none.

Izuku was left for dead on his eight birthday on the floor of a ruined shrine. the time was right, and the Wily gap youkai knew that he would change the world. but really, she was in it for the divine Chaos that would ensue.

After all of the products made by ACME Corporation backfire on Wile E. Coyote, in his pursuit of the Road Runner, he hires an equally-unlucky human attorney to sue the company, and in the hinges back to Gensokyo, Sanae returns to the real world to help Coyote to get his justice against the ACME corporation after witnessing his mishaps on ACME products backfiring him.