From Alpha Strike Games Limited
PDF – $0.99 USD

This is a set of four color tile maps, each 25 x 25 tiles, that can be tiled together. Each map is split in half over two A4 pages.
Print them out, glue to card, cut, put them on the table how you want, and have at it.
These can be used in just about any sci-fi RPG or tabletop skirmish game.