Open Water — 24×36 Gridded TTRPG Battle Map

Take Your Adventure Off the Shore

When the encounter moves onto the water, give your players room to explore it.

Open Water is a large-format physical TTRPG battle map featuring deep blue water, natural-looking currents and waves, and a clearly visible 1-inch square grid. With no predetermined terrain, structures, or obstacles, the map gives Game Masters a versatile foundation for building encounters their way.

Set a ship on the open sea. Stage an attack from beneath the waves. Create a dangerous river crossing, an underground lake, a flooded ruin, or an aquatic boss battle. Add your own miniatures, terrain, vessels, tokens, and encounter elements to transform the map from session to session.

Built for the Table

• 24" × 36" battle map — Plenty of space for encounters, movement, and larger battlefields.

• 1-inch square grid — Printed directly into the artwork for easy positioning and movement during tabletop play.

• Open-water design — No fixed structures or encounter elements, giving GMs freedom to build different scenarios on the same environment.

• Matte or Semi-Gloss finish — Choose the appearance that works best for your table.

• Rolled for delivery — The map is supplied unframed and rolled rather than folded, avoiding permanent fold lines through your battlefield.

One Map. Countless Encounters.

Use Open Water for:

• Naval and shipboard encounters

• Ocean voyages

• Sea-monster attacks

• Underwater adventures

• Lakes and large rivers

• Flooded ruins and chambers

• Aquatic boss encounters

• Custom encounters using your own terrain and miniatures

Whether your party is crossing peaceful waters or discovering what has been following their ship from below, Open Water gives you the battlefield. You decide what happens on it.

Product Details

Size: 24 × 36 inches
Grid: 1-inch square grid
Format: Physical rolled battle map
Finish Options: Matte or Semi-Gloss
Orientation: Can be used vertically or horizontally as your encounter requires
Frame: Not included

Miniatures, terrain, ships, tokens, and other tabletop accessories shown in product photography are for demonstration purposes only and are not included.