The Buildings and Bombs expansion adds a whole new deck to Obliquity: The Trenches, the blueprint deck. This new deck consists of building and defence cards, to expand your trench and improve your operations.
Players can now utilize No Man's Land as they set up defences against their enemies. Racking up Attack Points, instead of Power Points, your defences directly repel your opponent's trench.
Buildings can be constructed in the trench, to house and protect cards as well as provide unique bonuses. Your trench will become a lot more colourful and powerful as you set up bunkers along the front row, and POW Camps in the back.
Four new special cards also enter the fray, providing devastating and unique effects if played. This expansion adds new dimension to the regular game, after one game, you'll never look back.
—description from the publisher