Grimslate: A Free Warhammer 40,000 Army Builder for 11th Edition
Grimslate is a free, no-account army builder for Warhammer 40K — 25+ factions, full 11th-edition datasheets, and live battle tracking. Why our sister project is worth a look.
If your weekends are split between a D&D campaign and a Warhammer 40,000 army, you already know the tax of jumping between tools. We built Nat20 for the tabletop RPG side of that hobby — and our friends over at Grimslate are building the piece we always point people to for the wargaming side: a fast, free army builder for 40K.
Grimslate is a sister project. We cross-reference each other because we're solving the same problem in two different corners of the tabletop world — keep the admin out of your way so you can actually play. Here's what it does and why it's worth a look.
What is Grimslate?
Grimslate is a free, collaborative army builder for Warhammer 40,000. Pick a faction, add units, and it handles the point costs, wargear, leaders, and transports for you — validating the list as you go so it's legal before you get to the table. No spreadsheet, no juggling PDF codexes, no account required to start.
Built for 11th Edition
Grimslate is 11th-edition ready, with complete datasheets across the game. At the time of writing it covers 25+ factions and 800+ units, so whether you're fielding Space Marines, Necrons, or something more niche, the list you want to build is already in there.
Free, fast, and no account required
You can open Grimslate and start a list in seconds — no sign-up wall, no trial timer. It's free forever, and it's quick enough to tweak your list on your phone the morning of a game without fighting the interface.
Collaborative, with live battle tracking
Lists aren't just static point totals. You can share an army with your opponent or your club, and Grimslate includes live battle tracking so you can follow wounds and casualties through a game rather than scribbling on a printout. It's the same “one source of truth for the whole table” idea we lean on for campaigns in Nat20, applied to a 40K match.
The same philosophy as Nat20
If you run D&D or another tabletop RPG, Nat20 does for your campaign what Grimslate does for your army: it takes the bookkeeping — characters, items, loot, session notes, the combat tracker — off your plate so the time at the table is spent playing, not administrating. Two tools, same instinct, built by people who play the games.
Give it a try
Building a 40K army for your next game? Head over to Grimslate and start a list — it's free, and no account is required. And if you need the same kind of tool for your RPG table, Nat20 is right here.
