~Story~
-The Spiriting Away-
An incident visited Gensokyo alongside summer.

One by one, things all over Gensokyo began to disappear.
It started with living things such as fairies and humans,
then continued on to affect even inanimate objects like buildings.
These mysterious happenings have struck fear into the people of Gensokyo.

Is this an incident...?
Just now, four individuals have set out amidst these strange events.

Select one of these four protagonists,
and resolve the spiriting away incident plaguing all of Gensokyo!

There are over 100 allies called "shikigami" to recruit.
Combine shikigami however you like and bring the incident to its resolution!

~Game Systems~
"Touhou Gensou Maroku W ~ The Devil of Decline" is a 2D turn-based RPG.

After the prologue, you'll be able to select one of four protagonists.
There are no major changes to enemy strength or the story between them,
but there are differences in their ease of play, your initial party members,
the type and number Spell Cards you start with, and so on.
(The characters you didn't choose will join your party later.)

Devil of Decline's main selling point is its shikigami system.
Putting it simply, it's a system that lets you "equip your allies."

*Touhou Gensou Maroku W is a Touhou Project fangame.
Touhou Project is a copyright of Team Shanghai Alice.