Free tools that do real work
Generate normal maps, pack ORM and mask maps, build sprite atlases, resize textures and create every Steam image in seconds. No sign-up, no watermarks, and your files are never stored.
Browse the tools →Free tools · Tutorials · Plugins & assets
Build better games in Unreal Engine & Unity
Tvashta Studio makes free, practical tools for game developers: normal maps, texture packing, sprite atlases, Steam capsules, economy and progression calculators, and more. Alongside them you will find honest tutorials and production-ready plugins and assets that save you weeks of work.
- Free forever tools
- Unreal Engine & Unity
- No sign-up
What you get
Everything a small team needs to ship
Built for both engines
Unreal and Unity disagree on axes, units, normal map formats and texture layouts. Every tool here knows the difference and exports the right format for your engine.
See tools by engine →Tutorials from real projects
Practical guides on game design, Unreal Engine and Unity, written while building actual plugins and games. Clear steps, real numbers, no filler.
Read the articles →Plugins & assets that save weeks
Production-ready systems you can drop into your project, sold on Fab and the Unity Asset Store, with proper documentation and support.
See the products →Free tools
All 12 tools →Tools that solve real game dev problems
12 free tools for Unreal Engine and Unity: textures, sprites, Steam assets, game design and more. No sign-up needed.
Normal Map Generator
Turn a height map or texture into a normal map. DirectX for Unreal, OpenGL for Unity, seamless tiling.
Open tool →Texture Channel Packer
Pack AO, roughness and metallic into one texture: Unreal ORM, Unity URP and HDRP Mask Map presets.
Open tool →Sprite Sheet Packer
Pack hundreds of sprites into atlases with trimming, padding and extrusion. Exports JSON for Paper2D and more.
Open tool →Power of Two Texture Resizer
Batch resize textures to power-of-two sizes, convert to PNG, JPG or WebP and shrink file sizes.
Open tool →Steam Capsule & Asset Generator
Create every Steam store, library and event image at the right size from one key art and logo.
Open tool →Steam Sales & Revenue Estimator
Estimate copies sold and real take-home revenue from Steam reviews, price, discounts, refunds and taxes.
Open tool →PluginShopping Simulator Kit
Product spotlight
PluginIn developmentUnreal Engine
Shopping Simulator Kit
The core systems of a shop or supermarket simulator for Unreal Engine, ready to drop into your project.
- Products, stock and shelf placement
- Customers that browse, pick items and queue
- Checkout and payment flow
- Pricing, expenses and daily profit economy
From the blog
All articles →Unreal, Unity & game design articles
DirectX vs OpenGL Normal Maps: Unreal Engine and Unity Explained
Why your normal map looks inverted, which format Unreal Engine and Unity expect, and three ways to fix the green channel.
Steam Capsule Art Sizes and Rules (2026 Guide)
Every Steam store, library, event and icon image size, the rules Valve enforces on capsule art, and tips for capsules that get clicked.
Unity vs Unreal Coordinate Systems: Axes, Units and Rotations
How Unity and Unreal Engine differ in axes, units and rotation order, the exact formulas to convert positions, rotations and scale, and common pitfalls.
About the studio
Named after the divine craftsman
In Indian mythology, Tvashta (Tvashtr) is the celestial architect who forged tools and weapons for the gods. Tvashta Studio follows the same idea: build well-made tools so other creators can build their own worlds.
Read the story →Are the tools really free?
Yes. Every tool on Tvashta Studio is free to use, with no account, no watermark and no limit on how often you use it. They exist to help developers and to introduce you to the studio's plugins and assets.
Do you keep the files I upload?
No. Browser tools never upload anything. File tools marked "Cloud" send your files to our server, process them in memory and send the result straight back. Nothing is saved to disk or shared.
Do the tools work for Unreal Engine and Unity?
Yes. Where the engines differ, the tools give you a choice or a preset: DirectX normal maps for Unreal and OpenGL for Unity, ORM for Unreal and Mask Maps for Unity, DataTable CSV for Unreal and JSON for Unity.
Can I use the results in commercial games?
Yes. Anything you create with the tools belongs to you and can be used in commercial projects. Just make sure you own the rights to the files you upload.
Where can I buy your plugins and assets?
Unreal Engine products are sold on Fab, Epic's official marketplace, and Unity products on the Unity Asset Store. The products page links to every listing.
Can I suggest a tool or tutorial?
Please do. Many of the best tools start as a request from a developer with a real problem. Use the contact page and tell us what slows you down.