If you are looking for a "paper" (documentation, research, or a guide) related to this specific string, it likely refers to one of the following:
The text you provided, , is a common title format used by abandonware and pirated game distribution websites (like SteamUnlocked or similar mirrors). These sites offer "pre-installed" versions of games—in this case, the 2016 sci-fi tower defense game Fortified —often including multiplayer cracks or specific "build" versions. Fortified Free Download (Incl. Multiplayer) Bui...
: Most of these downloads come with a .txt or .nfo file (the "paper") that explains how to run the game, bypass DRM, or set up local multiplayer via emulators like Goldberg or SmartSteamEmu. If you are looking for a "paper" (documentation,