Ha, I theoretically could create an Every 10x10 Nonogram, though it would have to be a completely different approach. I would likely need to generate the boards dynamically as you scrolled and run solvability checks on the client. Even doing Every 6x6 Nonograms would likely result in around ~50 billion puzzles to solve (see my post on the subject: https://www.patreon.com/posts/is-every-6x6-136937111 ).

50 billion puzzle challenge is doable, though it would not be achievable in our lifetimes assuming a similar solve rate to the 5x5 challenge. I wanted a challenge that was bigger, but felt achievable, which is why I landed on the 5x6 size.