It’s good but perhaps ‘Too American’ for UK users
And, as a UK user I found that there is a large emphasis on US sports (including terminology and player names), US places (and not just major cities) and US politics. With only one undo per level before you have to start again it means that guessing or having a go at a subject you’re not familiar with (surgical procedures was another one) isn’t really an option, you either have to stop that series or use hints to do all of that level in the hope that the next is something you stand a chance of answering, very tedious. I’d like a “skip this level option”