Update 02.069: Dear Engineers! In this week's update we are making another addition to the group of entrance blocks. We've added a new block, the portcullis. It's modular, so it allows you to combine it with other blocks in various ways. It's also a compound block, so there are a large number of possible combinations. It's the last of the series of gate blocks that we've been adding over the past weeks.
Full list of new features and fixes: Forums.keenswh.com