Free TTRPG Battlemap – Cosmic Crystal Spaceship

Click image to download this free TTRPG battlemap of a Cosmic Crystal Spaceship, then keep scrolling for the detailed adventure prompt written for it.

You are invited to test a new prototype spaceship, said to be the fastest between worlds. Built by an elite guild of dwarves, it utilises a new crystal technology that’s powered by the solar winds. They absorb the energy and release it as motion, but the ship’s true strength is its ability to jump between planes! It fazes between them by warping reality around it.

Once onboard with a representative from the guild, you sail deep into the Ocean of Night. You watch in awe as the other vessels sailing the solar winds quickly fall behind. Then your guide initialises the first inter-dimensional jump, and everything becomes blurry; edges fuzzy and undefined.

Suddenly, clarity returns with sharp crispness. You are somewhere completely different, staring at a planet comprised majorly of water, a steady stream of ships sailing by it. The dwarf grins and manipulates the controls again. Once more everything becomes blurry, before clearing up to see a larger planet of stone and burning lava, surrounded by multiple moons.

After a third jump, you find yourself staring out at a dark, uncharted expanse of the Sea of Night. There are no planets to be seen, nor other vessels. The dwarf goes to initiate another jump, but nothing happens. He frowns, staring at the controls. He checks a device hanging off his belt. According to the reading, there should be plenty of solar wind to power the crystals.

However, if the ship’s display is correct, it’s losing power—and not just for an interdimensional jump. If you don’t figure out why, the ship will lose all power and you’ll be stuck adrift in the uncharted territories.

WHAT’S HAPPENING? Interdimensional parasites that feed on the energy of the crystals have been attracted to the ship and boarded during fazes. They are a glowing white ooze that pass through the walls and floors to coat the crystals, destroying them as they absorb the energy.

You must hunt them down before it’s too late. But they are hard to kill, as they—like the ship—faze between dimensions.

If you’d enjoy more maps like this free TTRPG battlemap of a Cosmic Crystal Spaceship, Luke and I are currently offering 520+ battlemaps for $39. It’s your chance to have a great deal on some of our most popular battlemaps! With over 520 total maps, we guarantee that is something here for every GM—no matter what genre or setting you prefer, from grimy dungeons to beautiful overgrown ruins.

Paying just $39 rather than full price saves you over 96%! Take a look at all the extra maps you can download with one click here.

Beb and Luke

View articles

LUKE: The founder of Seafoot Games, Luke's been making maps and RPG games since he was a child, and spent over a decade creating his own game systems from scratch to play with his brothers. That was before he discovered other TTRPGs existed. Now, he paints the realistic grimdark fantasy battlemaps we're known for, helps write adventures as needed, and spends his free time printing and painting 3D minis, as well as working on his forever in-development TTRPG system.

BEB: Luke's wife, Beb's been writing, painting, and graphically designing things her whole life. She published her first book when she was 20, alongside a handful of sci-fi short stories, and was responsible for writing almost all of our adventures until mid 2022 when Steve joined the team. Now she mostly creates the outlines for the adventurer's guides with Luke, graphically designs documents, handles the bookkeeping (or as she likes to call it, bureaucrat wrangling), and manages the website—but she is slowly delegating these responsibilities, so she can focus on raising her and Luke's beautiful son.