View source for Seek and you shall find

{{game-7drl| name = Seek and you shall find
|developer = Tilded
|theme = Fantasy
|influences = .
|released = .
|updated = .
|licensing = .
|language = Javascript
|platforms = Browser
|interface = Emulated Terminal
|length = Coffeebreak
|site = .
}}

A simple roguelike with an ephemeral map—rooms are created are you enter them and destroyed as you leave. Running away from enemies will make them disappear, but they will continue to haunt you somehow.