The activation system was a simple challenge–response. A known generic code for some versions was “MERRY” or “ELF” followed by numbers, but success varies. No single “useful paper” exists beyond the original manual sheet.
Many old eGames titles used a physical manual with a grid or code table. For Elf Bowling: The Last Insult , some releases had a simple code like BOWLME or XGAMES (or a 5‑digit number printed inside the CD case). These rarely work on modern OSes anyway, as the game needs a 16‑bit installer or compatibility mode. elf bowling the last insult activation code
It sounds like you’re referring to the old shareware game (released around 1999–2000), where an “activation code” was required to unlock the full version after the demo. The activation system was a simple challenge–response