Fantasy terrain for RPGs or tabletop games

How it works

Pink or blue extruded polystyrene insulation board, around 5 to 10 euros a sheet, is the material the whole craft is built on. It is light, it carves cleanly with a hot wire or a craft knife, and it takes paint well. The fine closed-cell structure is what matters, because the crumbly white expanded foam from packaging tears instead of carving, which is why terrain builders specifically hunt down the insulation grade.

Carving stone is the core skill. Press a stone pattern into the foam with a ballpoint pen or a stiff dry brush, then bevel the edges so blocks read as three-dimensional. A base coat of watered-down black acrylic seals the foam and fills the recesses with shadow in one pass. Drybrush grey over the raised surfaces afterward, and the stone suddenly looks carved rather than drawn.

Texture comes from sand and texture paste. Spread fine sand in PVA across floors and bases for grit underfoot, and the paint catches it as ground rather than smooth foam. Static grass, lichen, and clump foliage add the wilderness elements once the stonework is painted.

Build to a consistent module so pieces tile together. Standard 15cm by 15cm floor tiles and 15cm by 5cm wall sections combine into endless layouts, but only if every piece shares the same footprint and height. Inconsistent dimensions are the single most common reason a terrain collection never quite fits together on the table.

The reward is immediate the first time players use it. A dungeon fought across carved walls and a real portcullis lands completely differently from one drawn on a grid.