Fat Dragon Games has releases paper terrain Combat Bunker.
From their site:
Welcome to the future... Fat Dragon style! E-Z FUTURE: Combat Bunker provides everything necessary for exciting sci-fi gaming. Our exclusive DRAGON LAYERS options allows you to customize each piece before printing, making them as dirty, chipped, and blaster damaged as you like. Walls and floors include layered access panels that can be removed to reveal interior workings, and archways include sliding doors. Our exclusive E-Z LOCK system allows you to disassemble your layout and store virtually flat, utilizing simple bobby-pins (hidden within the wall) to connect all structures together!
This set includes:
• 3D walls, each with DRAGON LAYER graphic options, in 1", 2", 3" & 4" lengths
• Window wall
• Sloped corners
• Swappable laser gun turrets and wall mounts
• Computer terminal
• Storge locker
• Observation tower
• Our exclusive E-Z LOCK pillars
• Full color instructions