ColonelFazackerley andy I think hard, not extreme. It's obvious you have to build a big thing. There's a few details of getting the thing to be structurally sound etc, but it's not extreme.
ColonelFazackerley levelsbot The planned failure and release of energy that pings it sideways is amazing.
andy So many people playing and solving the properly hard levels. Very exciting. Don't forget to make your own levels too!