I just realized how much Builder was subconsciously influenced by Portal. I honestly didn’t even think about it at all. But Valve’s design pervades almost everything about the game’s structure, down to the build/destroy thing (as opposed to red/blue portal stuff), and the way that the design is broken down into… sort of puzzle rooms.
And the whole game is sort of about escaping from this cozy gamey situation. And all the way the game teases you about what may be beyond that facade. Then at some point you — well. At some point everything becomes clear, and that’s when things become really interesting.
It says something about Valve’s design sensibility that I find myself aping it without even knowing I’m doing so.
If you have yet to play Builder, go and do so. If you downloaded it early on, you might as well upgrade; there are always little improvements. Meanwhile I’m working on a way to make the game easier for everyone to experience.