Tainted Reimu is a character in Reverie: Make Good Omissions, a mod for The Binding of Isaac.

No starting items.

Has no health and dies in one hit.

Has the ability to fly that ignore all obstacles and ground enemy hindrance.

Has 3 extra life that causes her to respawn in the current room.

Has immunity to all damage except non-ranged damage and flying enemy contact damage.

Cannot shoot any tears on her own, thus relies on spectral homing amulets fired by her innate Yin-Yang Orb Options to deal damage. The number of Options is equal to the integer value of damage, but will not be less than 1.

Yin-Yang Orb Options' amulets can destroy doors, obstacles, and fire places.

All heart pickups are converted into 5 Power Points.

Taking non-self damage causes loss of all collected Power Points.

Tears are fixed at 5.00 and damage cannot exceed 5.00.

Can carry up to 999,999,999 coins:
• +100¢ for every instance of damage dealt to enemies or traps.
• +1,000¢ upon killing any non-boss enemy or trap.
• +100¢ for every Power Point picked up.
• +10¢ for every bomb and key picked up.
• +10,000 × CurrentFloor¢ for killing a boss outside of boss rooms.
• +100,000 × CurrentFloor¢ upon clearing a boss room. Awards an extra 1,000,000 - 120 × ClearTimeInSeconds¢ if cleared without using consumables, bombs, or losing lives.
• +100¢ for each grazing.

Can only carry up to 6 bombs.

Bombs are used to cast a Spell Card (Mufu "Musou Akuuketsu") instead of being placed down.

Non-boss enemies and traps instantly die after being hit by Yin-Yang Orb Options' amulets 3 times.

Bosses instantly die after being hit by Yin-Yang Orb Options' amulets 20 + 15 × CurrentFloor times.

+1 extra lives upon clearing a boss room.

+1 extra lives when coins first reach each multiple of 2,000,000.

If items without the quest tag would spawn upon entering a room (except in Boss Rush Room), replace them with Mike.

Can carry min(5, CurrentFloor) Ability Cards at once.

Has no ability to activate any active item's effect (except Esau Jr.).

All Shop Restock Machines are converted into Donation Machines.

Hold the Shift key to toggle Focus Mode:
• -50% hitbox size, now indicated by a red dot near her legs.
• Speed is reduced, but some enemy shots pass over her.
• Yin-Yang Orb Options group towards Reimu's firing direction, shooting spectral needles at 4 times Reimu's fire rate.

The following special synergies and interactions for Tainted Reimu have been documented.

* Note that not all possible synergies and interactions are listed here.

The design of Tainted Reimu is inspired by the character M-Reimu from Mugen.

Tainted Reimu's thematic concept revolves around "the collapse of barriers and the ruin of paradise" — a version of Reimu Hakurei who has broken after the destruction of her world. This draws partial inspiration from doujin works such as Ends Of Fantasy, Tragedy of Gensokyo, and Concealed the Conclusion. Unable to accept reality or face the present, the former guardian eventually descends into madness. She locks her miko attire and memories away in a box, and begins turning against her friends one by one. Believing that killing everyone will "resolve the incident" and allow everything to restart from zero, she seeks to return to the past — using their bones and blood to piece together a false Gensokyo, all in pursuit of her own liberation.

Therefore, Tainted Reimu's mechanics entirely replicate STG gameplay (e.g., coins become score items, damage is converted into firepower, etc.), creating a deliberate dissonance with the core mechanics of The Binding of Isaac — reflecting the narrative theme of "rebuilding Gensokyo".

Furthermore, her mechanics hybridize systems from various Touhou titles:
• Damage (Firepower) follows the system from Mountain of Faith
• Bombs adopt mechanics from games except Mountain of Faith and Subterranean Animism
• Ability card mechanics are derived from Unconnected Marketeers
This blending mirrors the lore concept that the "reconstructed Gensokyo is patched together from vague and broken memories".

Tainted Reimu's Birthright description references a highly classic and well-known epithet for Reimu Hakurei, while its effect pays homage to "thprac" — a widely used tool in the Touhou community for practicing bullet pattern evasion.

• Download Reverie: Make Good Omissions from the Steam Workshop.