Cryptogram Puzzle Game Creation

I've found a simple cryptogram puzzle game online that I want to replicate, but without copying their code. ([login to view URL]) The game should challenge players to solve a custom cryptogram (and I want to be able to customize it for new challenges in the future). The solution is a clue to the next step in a larger game, a scavenger hunt. I do not want to charge players or be charged myself for players to use the game. I want to buy a copy of the game from you. You get to keep it and sell it again or set it up as a money-maker, as long as my license allows me to use it on my website(s) without further cost to myself. (Every company I found wants to charge by the head.) I want to use it as marketing outreach for my product (murder mysteries). Key features: - Puzzle-solving gameplay: Players decode cryptograms to see clues. - Progressive hints: Players receive word clues after a certain time. (I can provide the encrypted message and the word clues.) Ideal candidate: - Proficient in game development and coding. - Understands the need for originality and can avoid code plagiarism. Please only bid if you can deliver a copyright violation free version of the cryptogram game. The game should be available as a web and mobile application.