So I looked at worldedits code for solid cylinder generation. Modified it a little. Run it. Generating a circle = fine. Knowing where to place the blocks = fine. Placing the blocks themselves = NOT FINE It lags to pieces. I have a goal of making a Hunger Games style plugin precisely like the book except for a few details and so I need to have a central area where they spawn in. Problem being this circle needs to be 1/3 larger then the platform circle. And at my test of 120 players this gets a bit of lag. Anyone wondering why I have no bukkit dev page or anything up on this. I found I don't like having people get psyched over something I might drop. Basically. Is there any fast way to create blocks in the world. Else I'm going to have to limit how much of the circle generates per tick. Perhaps call it a "countdown" before the game starts.