Hey @lordnigel
I really like your IBT on the Blockchain and participated a couple of times, but I have to agree with the other people here. A dedicated offsite webpage would really enhance the experience. The most annoying thing in all my IBT was that after e couple of hours the IBT post had almost 100 comments and it was very hard to even find my own comments to keep on playing.
I really think that a dedicated website isn't that hard to program. Yes you are going to need to learn JS. I myself also learned it to program some website games. The language is surprisingly easy (almost too easy). But with any new language it takes time to learn it.
Also I think you should opensource your game and your webpage. Then you can get upvotes from @utopian-io and people (like me) could help you develop the game. But I am very well aware that this is quite a huge step and requires you to put in plenty of time. But I fear that without this step IBT will never actually make it or even die pretty soon.

Looking forward what new ideas you come up with I wish the project can rise in the future! :D