UV, retopology and baking tools

After modeling, most game assets go through three technical steps: UV unwrapping, retopology of dense meshes, and baking high-poly detail into textures. General suites handle all three, but dedicated tools are often faster or more precise.

#How to choose

Learn the built-in tools of your main suite first: Blender and Maya both include UV editors and retopology tools (Blender Manual: UV tools; Autodesk Help: Unfold UVs options; Autodesk Help: Manually create or retopologize a mesh with…). Add a dedicated tool when one step becomes your bottleneck: RizomUV or a packer for lots of UV work, a manual retopology tool for sculpts and scans, and a dedicated baker such as Marmoset Toolbag when bake quality and speed matter. If you already texture in Substance 3D Painter, its baker may be all you need. For the concepts, see UV seams and islands, UV packing and padding, texel density, bake cage and tangent space and MikkTSpace.

#UV unwrapping and packing

Tool	Best known for (env/game work)	Platforms	Licence model	Price (as of October 2026)	Free / student option
Blender UV tools	Built-in Unwrap, Smart UV Project, Lightmap Pack, Follow Active Quads and projections (Blender Manual)	Windows, macOS, Linux (blender.org)	Free, GNU GPL	Free	Free
Maya UV Editor	Built-in Unfold, using the Unfold3D method by default (Autodesk Help)	See modeling software	Part of Maya	See modeling software	Maya education licence
RizomUV VS / RS	Dedicated unwrapping; VS "is designed for games and VFX", RS for product design (CG Channel)	Windows 10+, macOS 11+, Linux (RHEL/Rocky/Alma 8/9, Ubuntu 24.04) (CG Channel)	Indie (under €100,000 a year): perpetual or rent-to-own, node-locked to two computers; Pro: rental only	VS Indie: €149.90 perpetual or €14.90/month rent-to-own; VS Pro: €34.90/month rental	See vendor
UVLayout	Long-established unwrapper with distortion colour-coding and packing; v2025.02 released November 2025 (uvlayout.com)	Pro: Windows, Mac, Linux; Hobbyist: Windows, Mac (uvlayout.com)	Permanent licence with 12 months of updates	Professional US$330 / US$400; Hobbyist US$200	Student US$35 (4 months) or US$100 (12 months), non-commercial; free demo
Ministry of Flat	Fully automatic unwrapping that keeps texel density even and packs islands (quelsolaar.com)	Standalone GUI and command line; works via OBJ	Free licence for hobby, academic and commercial use; paid commercial licence for redistribution, cloud or source	Free; commercial licence on request	Free
UVPackmaster 4	Fast CPU/GPU UV packing, aligning and stacking for Blender and Maya (uvpackmaster.com)	Blender 2.93–5.2 (Superhive)	Per-user licence	$55 single user; $199 studio (2–5 users); $349 studio (6–10 users)	—
Zen UV	Blender UV toolset: unwrap, pack, texel density, trim sheets (Superhive)	Blender 4.2–5.2	Per-user licence	$39 single user; studio licences from $99 (2–5 users)	—
TexTools	Free Blender UV and texture tools: align, rectify, texel density, baking modes, Color ID (GitHub)	Blender 3.2+ (most features from 2.8)	Free	Free	Free
3DCoat	Sculpting, retopology, UVs and painting in one app (CG Channel)	Windows, macOS, Linux	Perpetual, subscription or rent-to-own	€379 one-time (individual, 12 months of updates), excluding VAT (3dcoat.com)	See sculpting software
Unreal Modeling Mode	In-engine UV editing alongside mesh creation (Beta) (Epic Developer Community)	See game engines	Part of Unreal Engine	See game engines	—
Houdini Game Development Toolset	Auto UV and other game tools in Houdini (SideFX)	See modeling software	Comes with Houdini	See modeling software	Houdini Apprentice

Two cylinders with a checker texture - stretched stripes on the left, even squares on the right. — What every UV tool in this table is trying to achieve, checked with a checker texture. Left: a planar projection stretches the squares at the sides and streaks them across the cap. Right: one seam down the side and separate cap islands keep the squares square. Whatever unwrapper you use, test its result this way.Rendered in Blender 5.2 (Cycles) by the handbook author

#Retopology

Retopology rebuilds a clean, low-poly mesh over a sculpt or scan. Manual tools give you full control of edge flow; automatic tools are faster but less predictable.

Tool	Type	Best known for	Platforms	Licence model	Price (as of October 2026)
TopoGun 3	Manual, standalone	Drawing new topology over sculpts or scans; also bakes normal, AO and other maps (CG Channel)	Windows, macOS; one licence covers both (topogun.com)	Perpetual standalone or floating licences, excluding VAT; demo cannot save	Perpetual; see vendor (prices did not display)
RetopoFlow 4	Manual, Blender add-on	Sketch-based retopology inside Edit Mode (CG Channel)	Blender 4.2–5.2 (Superhive)	GPL, sold on Superhive	$59.99
Maya Quad Draw	Manual, built in	"Create new meshes that are constrained to another object or plane" (Autodesk Help)	See modeling software	Part of Maya	See modeling software
3DCoat	Manual and automatic	Retopology alongside sculpting and painting (CG Channel)	Windows, macOS, Linux	See above	€379 one-time (3dcoat.com)
Quad Remesher	Automatic, plug-in	"An automatic quad remeshing (or auto retopology) algorithm" for 3ds Max, Maya, Blender, Houdini, Modo and Fusion (exoside.com)	Windows, macOS, Linux	Perpetual Indie (non-commercial) or Pro, or subscription; one-month trial (exoside.com)	Single host: $59.90 Indie, $109.90 Pro, or $15.99 per 3 months; all hosts (no CAD): $139.90 Pro, excluding VAT
ZRemesher	Automatic, in ZBrush	ZBrush's automatic retopology; the free iPad plan has only some options (Maxon Help)	See sculpting software	Part of ZBrush	See sculpting software
Instant Meshes	Automatic, standalone	Field-aligned remeshing from a SIGGRAPH Asia 2015 paper (Jakob et al. 2015)	Windows, macOS, Linux; pre-built binaries (GitHub)	Research code on GitHub	Free

#LOD and optimisation suites

These tools generate level of detail chains, impostors and billboards and remeshed proxies at scale. They are mostly bought by studios, not individuals.

Tool	Best known for (env/game work)	Platforms / integrations	Licence model	Price (as of October 2026)	Free / small-studio option
Simplygon (Microsoft)	Automated LOD chains, remeshing and impostors (simplygon.com)	Unreal, Unity, Maya, 3ds Max, Blender; Houdini in preview	Per title, per year	Standard: $42k per title per year	Indie discounts for registered companies under $5M revenue and costs, from $6,300 a year (under $100k); 30-day evaluation
InstaLOD	Polygon reduction, baking, auto-UVs and CAD/scan processing (CG Channel)	Windows, macOS, Linux; plug-ins for 3ds Max, Blender, Cinema 4D, Maya, Unity, Unreal (instalod.com)	Annual subscriptions; free Pioneer edition with attribution	Studio $99 a month, billed annually, for revenue under $250,000; larger licences cost more	Pioneer: free, including commercial use, for revenue or funding under $100,000, with attribution

Simplygon's free tier ended on 31 March 2024 (TechRaptor: Simplygon Free Tier Simply Gone, Leaving…). Engines also have built-in options: see virtualised geometry and hierarchical LOD.

#Baking

A baker projects detail from a high-poly mesh onto a low-poly mesh's UVs. The result is maps such as normal, ambient occlusion and curvature. See the high-to-low workflow and fixing baking artefacts.

A lavender normal map texture with outlines of bolts, grooves and bevelled edges. — The kind of output every baker below produces: a 1024 × 1024 tangent-space normal map baked in Blender's Cycles from a slab with grooves, bevels and bolts. Flat areas are RGB 128, 128, 255; slopes shift the colour towards red or green. The bakers differ in speed, cage handling and tangent-space options, not in the kind of map.Rendered in Blender 5.2 (Cycles) by the handbook author

Tool	Best known for (env/game work)	Platforms	Licence model	Price (as of October 2026)	Free / student option
Marmoset Toolbag 5	Real-time baking (marmoset.co) with interactive, UDIM and Bevel Shader baking (CG Channel)	Windows, macOS	Subscription (all upgrades) or perpetual (5.x updates only) (marmoset.co)	Individual US$18.99/month or US$399 perpetual; Studio US$49.99 per seat per month or US$1,299 perpetual	Academic US$119.99 per seat per year for institutions
Substance 3D Painter	Bakes AO, curvature and other mesh maps before texturing (Adobe Experience League)	See texturing and material software	Subscription or Steam perpetual	See texturing and material software	Free education licence (substance3d.adobe.com)
Knald	GPU baker praised for AO; vertex-colour baking from FBX or OBJ (Polycount)	See vendor	Demo plus paid licences; the Freelancer licence allows commercial use by one person	See vendor (site blocked automated reading)	Demo
xNormal	Free standalone baker for normal and AO maps (mmu.ac.uk)	Windows 7 or later	Free	Free	Free
Handplane Baker	Free baker with documented settings for Source, Unity and Unreal tangent space (CG Channel)	Windows only	Free, optional donation	Free	Free
TopoGun 3	Bakes from the high-res reference after retopology (CG Channel)	Windows, macOS (topogun.com)	See above	See vendor	Demo, no saving
InstaLOD	Bakers including Bevel Normals and Curvature (CG Channel)	See LOD table	See LOD table	See LOD table	Pioneer edition (instalod.com)

Different viewsWhich baker should you use?

Bake where you texture. A 2018 Polycount thread suggested Substance Painter as the better-value baker because it also textures, and pointed to its "match by mesh name" feature (Polycount: Recommended software for baking…).

Use a dedicated baker. The same thread ranked Marmoset Toolbag alongside Painter as one of "the 2 best bakers for game artists" (Polycount: Recommended software for baking…). Toolbag 5 added interactive baking (CG Channel: Marmoset releases Toolbag 5.0 in free public…), and an individual perpetual licence costs US$399 (marmoset.co: Marmoset shop).

Use a free baker. xNormal was described as clunky but "it's free and it works", with well-liked AO output, though slower and without FBX support (Polycount: Recommended software for baking…).

In practice: pick one baker, learn its cage and naming conventions, and check your normal maps in the target engine early.

#Further reading

Blender UV tools

reference for every built-in unwrap operator. Beginner, free.

DocsBeginnerFree

Maya Unfold UVs options

official reference for Maya's unfold settings. Intermediate, free.

WebIntermediateFree

Maya Quad Draw

Autodesk's retopology tool docs. Intermediate, free.

WebIntermediateFree

How to bake mesh maps in Painter

Adobe's baking walkthrough. Beginner, free.

DocsBeginnerFree

Polycount: recommended bakers

artists compare bakers. Beginner, free.

ForumBeginnerFree

Ministry of Flat

a free automatic unwrapper worth trying on scans. Beginner, free.

WebBeginnerFree

Instant Field-Aligned Meshes

the paper behind Instant Meshes. Advanced, free.

WebAdvancedFree