Each week Marsh Davies scuttles nervously over the creaking, makeshift architecture of Early Access and comes back with any stories he can find and/or plunges to his doom amid a shower of twisting metal. This week, he dons his hardhat and unfolds the blueprint for 3d Bridges, a physics-based construction puzzler in which you construct – yes! – bridges and then run a truck over them to test both their mettle and their metal. It also turns out to be standalone level pack otherwise included in the more sandboxy 3D Bridge Engineer toolkit – which is also on Early Access. They are not entirely as terrible as they might first look. Not entirely.