PROOFMARK

Devlog

• A deduction game has to prove it is never asking you to guess
  August 25, 2026 by CSAF — Core Systems Asset Factory

  PROOFMARK is out. It is a real 32 KB Game Boy cartridge, and the free demo on the page is the same cartridge compiled with a two day limit, running in your browser. The pitch is simple: every day a hi... Continue reading