GrainStack
Premium PBR Textures for Real-Time Engines
Photogrammetry-grade material packs, ready for Unity & Unreal Engine. 4K & 8K resolutions, physically accurate maps, and royalty-free licensing — so you can build worlds that feel real.
Featured Packs
Our Most-Loved Material Collections
Each pack is shot on location with Phase One cameras, processed through a custom PBR pipeline, and validated in both Unity HDRP and Unreal Engine 5 before shipping.
Urban Decay Vol. 1
24 seamless materials including spalling concrete, oxidised rebar, graffiti-stained brick, and rain-scoured asphalt. 4K albedo, roughness, metalness, normal, and displacement maps. Used in 1,200+ projects.
$49 — Single License
Industrial Metals Vol. 2
18 high-fidelity metal surfaces — brushed 304 stainless, hot-rolled steel, anodised aluminium, and verdigris copper. Includes animated normal variants for dynamic lighting. 8K resolution available.
$59 — Single License
Overgrown Wilderness
20 organic materials captured in the Pacific Northwest: mossy sandstone, loam soil, weathered cedar, and wet granite. Alpha masks included for terrain splatting in Unity Terrain and Unreal Landscape.
$54 — Single License
How It Works
From Download to Game-Ready in Minutes
No complex setup. No missing maps. Every pack drops straight into your engine and works out of the box.
1. Pick Your Pack
Browse 140+ collections across categories — architectural surfaces, natural terrain, industrial materials, and custom-styled fantasy assets. Filter by resolution, engine, or mood.
2. Download & Drop In
Each pack ships as a single ZIP with a pre-built Unity URP/HDRP material and an Unreal Engine 5 material instance. Drag into your project — import settings are pre-configured.
3. Ship Your Project
Every texture is licensed for commercial use — games, arch-viz, film, product renders. One purchase, unlimited projects. No per-seat fees, no revenue share.
Why Studios Trust GrainStack
Numbers Don't Lie
140+
Curated PBR material packs, each containing 12–30 individually shot textures with full map sets.
12,400+
Active subscribers across indie studios, AAA teams, and freelance artists in 48 countries.
99.7%
On-time delivery rate for custom-commissioned texture packs over the last 24 months.
Testimonial
"We replaced three separate texture vendors with GrainStack. The quality is consistently higher, the file structure is sane, and our artists save roughly 6 hours per sprint on material setup alone."
Marina Vasquez — Technical Art Director, Nebula Forge Studios (Unreal Engine 5, 42-person team)
Trusted By
Nebula Forge Studios · Arcadia Games · Parallax Interactive · Stonebridge ArchViz · Voxel Dynamics · Emberlight Productions
FAQ
Common Questions
What map types are included?
Every texture includes Albedo (sRGB), Normal (tangent space), Roughness, Metalness, and Displacement/Height maps. Select packs also include Ambient Occlusion, Curvature, and animated normal variants. All maps are 4K minimum; 8K is available on request.
Can I use these in commercial games?
Yes. Every purchase includes a perpetual, royalty-free commercial license. You can use the textures in games, arch-viz renders, films, product visualisations, and any other commercial project. Redistribution of the raw texture files is not permitted.
Do you support Unity URP and HDRP?
Absolutely. Each pack contains pre-built materials for Unity URP, Unity HDRP, and Unreal Engine 5. Import settings, texture compression, and anisotropic filtering are all pre-configured. If you use a custom shader, the individual maps work with any PBR workflow.
What's the refund policy?
We offer a 14-day no-questions-asked refund on any pack. If the textures don't meet your project's needs, email support@grainstack.io and we'll process it within 48 hours.
Get Started Today
Build Worlds That Feel Real
Join 12,400+ artists and studios who ship with GrainStack textures. Start with a free sample pack — no credit card required — then unlock the full library with a single subscription.