Yes, so provided that this imaginary "I" character doesn't suck at making games, I would make an RPG about... Marijuana.
The story revolves around Yuuka- whose main source of income (she runs a flora shop) proves to be insufficient because she spends all of her money on fertilizers for the sunflowers. Using her powers, she starts distributing marijuana grown from her hair to various residents of Gensokyo. Her job is to avoid the Gensokyo FDA and/or convince them to allow for her business of 420 greens to run smoothly via addiction, force or sheer manpower.
To play the game, Yuuka will have to resort to the magic of botany, make them illegal Canadian leaves more appetizing and hallucinogenic as she will be using them in battle against the authorities, as well as to attract more people into being part of her drug empire. Imagine minecraft enchantments, but for weed. The money gathered will then be used to bribe people like Reimu and Sanae to promote her premium blunts, buy ingredients and recipe books to make stronger weed, and you best believe it can be used to make a shrine dedicated to ZUN. The game will feature a map of the entirety of Gensokyo, with the various notable destinations being traversable for Yuuka and allowing for her to expand her industry. Running around shops, creating a blackmarket for everyone, from children to fairies to gods. Every once in a while, you will be raided by the local authority, in which case you will be forced to engage in a high octane sequence of shmups, where you will be able to utilize the powers of weed to intoxicate the raiders.
Your goal is to compromise the sages and permanently making your products legal in Gensokyo, and you lose when you run out of funds or get caught red-handed in this supposed "incident" which may or may not involve the main cast of character.
