Bio Force Ape
A mutant wrestling ape reached magazine previews and a nearly complete NES cartridge, vanished into legend, then reappeared at auction eighteen years after cancellation.
Quick facts
- Existence state
- Never Born
- Peak stage
- near release
- Research confidence
- high
- Last verified
What it was
An unreleased action platform game developed by SETA for the Famicom and Nintendo Entertainment System.
The unusually fast game followed a genetically altered ape fighting through laboratories to rescue its adopted human family.
Existence timeline
SETA shows Bio Force Ape and magazines preview it.
Stages and high-speed combat reach cartridge form.
The planned Famicom launch does not occur.
A hoax deepens the game's online legend.
A Japanese auction reveals an authentic cartridge.
Archivists release the recovered build.
Why it ended
SETA cancelled the planned release in 1992 for reasons never clearly documented.
Last confirmed trace
A genuine Japanese prototype was purchased, dumped and publicly preserved in 2010 after years of hoaxes about its existence.
What it left behind
The recovery transformed one of retro gaming's best-known rumours into a playable preservation success.
How we classified it
The proposed archive unit never reached ordinary public access in the form being documented.
The strongest verified milestone maps to near_release under Arrival Score V1.
Sources & verification
Last reviewed 2026-08-01. Sources are linked so readers can inspect the evidence directly.