Futanarioftheapocalypse-v1.0-pc.7z -

If "solid paper" refers to a password for the archive, a specific developer group, or a website source, it isn't a widely recognized one. You might want to check the specific page where you found the link (such as , Patreon , or an adult game forum) for those details.

: v1.0 suggests this is the first full release or a specific milestone build. FutanariOfTheApocalypse-v1.0-pc.7z

If you are trying to verify the file or find a specific version, here is what that filename generally indicates: If "solid paper" refers to a password for

: Futanari of the Apocalypse , an adult survival/RPG indie game. a specific developer group

: pc indicates it is the Windows/Linux version (likely a Ren'Py or Unity build).