The official rounds so far listed: 1-150. I WILL add them eventually to be up to 500, and that's where my mine will stop. None of that '750' crap. Not to mention, Round 500 WILL be winnable, and will give rewards if you actually beat them all (very unlikely however). If you think any rounds should be changed, let me know in the comments. Completion: 160/500 (30-something% completed)