Art asset resources

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There is much content on the web, which is free for personal use or has other unclear conditions. These resources have content exclusively under free licenses which make them ideal for open source game development.

Mixed content

Mixed game art asset resources
Page name/link 3D 2D Sound Music Details Active User can contribute Licenses
OpenGameArt Yes Yes Yes Yes Repository for freely-licensed game related artworks Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3
Free Game Arts Yes Yes Yes Yes Game-related art files No No CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3
Freetems No Yes No Yes Various Public domain / CC0 resources. Yes Yes CC0, Public Domain

2d drawn and pixel art

2d game art asset resources
Page name/link Pixel art Drawings Details Active User can contribute Licenses
Moosader's OpenArt graphics Yes No Mostly retro pixel art Yes Yes CC0, CC-BYv3
OpenGameArt 2d art Yes Yes Repository for freely-licensed 2d game art Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3

Photos and references

Photos and reference art assets
Page name/link For textures1 Size2 Details Active User can contribute Licenses
Ben Cloward's Texture Archive Yes 399 Photos for making textures No No CC0[1]
BurningWell.org Yes 2772 High-res, texture-friendly Yes Yes CC0
Image*After (GPL section) Yes 10511 Hight quality reference images and raw textures Yes No GPLv2+[2]
Martin's Reference Photos Yes 894 High-resolution reference photos No No CC0/GPLv2+
Sindwiller's texture references Yes 300 6 Megapixel reference photos No No GPLv2+/CC-BY-SAv3
Wikimedia Commons images No 50000 Wikimedia's media library of images Yes Yes CC0, CC-BYv3, CC-BY-SAv3

1Photos are extraordinary useful for creating textures 2Approximate number of freely licensed photos

Fonts

Font resources
Page name/link Size1 Details Active User can contribute Licenses
Google Web Fonts 500 Open source fonts, available in a mercurial repository Yes No OFL
Free Font Manifesto 5 Selected free fonts No Yes PD
Open Font Library 72 Font library Yes Yes CC0, GPLv2+, OFL
OpenGameArt fonts 20 User-submitted game font resources Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3

1Approximate number of freely licensed fonts

Vector graphics

Vector graphic art asset resources
Page name/link Size1 Details Active User can contribute Licenses
Crystal Project 1300 KDE icons Yes Yes LGPL
Game-Icons.net 850 SVG Game Icons Yes No CC-BYv3
Open Clip Art Library 12000 Vector clip art Yes Yes CC0

1Approximate number of freely licensed graphics

3d models

3d model resources
Page name/link Size1 Details Active User can contribute Licenses
Blendswap 309 User-submitted models, many trademark/copyright infringements Yes Yes CC0, CC-BYv3, CC-BY-SAv3
Kator Legaz 3d Models 236 Various static objects and buildings Yes No CC-BYv3
MD2 game models 31 (sets) Game models and levels No No CC-BYv3 and GPLv2+
OpenGameArt 3d art 709 3d game models Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3
Oyonale 3D objects 51 Models Cinema 4D, POV-Ray, OBJ formats No No CC-BYv3
Scopia resources 105 Mostly interior design No No CC-BYv3

1Approximate number of freely licensed items

3d levels/maps

3d level map asset resources
Page name/link Size1 Details Active User can contribute Licenses
Lunaran, Unplugged 5 Quake maps No No GPLv3
Quadropolis 462 Cube/Sauerbraten models/maps, much material expected to be infringing/unknown-source, level geometry probably fine Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3, MIT
TRaK maps 4 A few maps, pay attention to licensing! Yes No GPLv3+
Zero Credibility Custom Levels 18 Quake maps No No GPLv2

1Approximate number of freely licensed items

Materials

Material resources
Page name/link Size1 Details Active User can contribute Licenses
Open Material Repository 651 Blender format materials repository Yes Yes CC0[3]

1Approximate number of freely licensed items

Textures

Texture resources
Page name/link Size1 Details Active User can contribute Licenses
AGF81's deviantArt gallery 553 High resolution textures and photos Yes No CC-BYv3
Blender Texture CD 430 Old textures No No CC0
OpenGameArt textures 3429 Game textures Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3
Scopia resources 5 Extremely detailed wood textures No No CC-BYv3
TRaK's textures 6 (sets) FPS texture sets Yes No CC-BY-SAv3, GPLv2+, MIT

1Approximate number of freely licensed items

Music

Music art asset resources
Page name/link File formats Size1 Details Active User can contribute Licenses
Free Music Archive mp3 2585 Various music, make sure to use license filters in search Yes Yes CC-BYv3, CC-BY-SAv3
FreePD mp3 1000 Genre-categorized Yes No CC0
incompetech.com Royality Free Music mp3 953 Music by Kevin MacLeod Yes No CC-BYv3
Jamendo mp3 91020 Make sure to filter search by license Yes Yes CC-BYv3, CC-BY-SAv3
Moosader's OpenArt music mid, mp3, ogg, xm 45 Retro game music Yes Yes CC0, CC-BYv3
Musopen mp3 1000 Classical music recordings, mixed quality Yes Yes CC0
OpenGameArt music flac, mmpz, mid, mp3, ogg, xm 500 User-submitted repository of game music Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3
Open Music Archive mp3 29 Expired copyright recordings Yes No CC0
opsound mp3 Yes Yes CC0, CC-BY-SAv3

1Approximate number of freely licensed tracks

Sound

Sound effects asset resources
Page name/link File formats Size1 Details Active User can contribute Licenses
Freepats .pat 128 Instrument patches for software synthesizers Yes Yes CC0, GFDL, GPL, LGPL
Freesound .wav, .aif, .flac, .ogg 105729 Community-based sound library Yes Yes CC0, CC-BYv3
Obiwannabe sounds and generators .mp3, .pd 200 Various game dev sounds including procedural generators for such No No CC-BYv3, GPL[4]
OLPC Sound Samples .wav 6549 Instrument and music samples, sound effects Yes No CC-BYv3
OpenGameArt sounds flac, mp3, ogg, wav 350 User-submitted repository of game sounds Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3
public domain sounds .flac, .ogg 527 Sounds mostly in mp3 format Yes Yes CC0

1Approximate number of freely licensed sounds

Voice

Game voice art asset resources
Page name/link File formats Size1 Details Active User can contribute Licenses
FreeSound voice search CC0 and CC-BYv3 .wav, .aif, .flac, .ogg 7752 Various voices and voice-based sounds Yes Yes CC0, CC-BYv3
LibriVox mp3, ogg 4877 Literature reading recordings Yes Yes CC0
OpenGameArt voice sounds flac, mp3, ogg, wav 80 User-submitted repository of game voice sounds Yes Yes CC0, CC-BYv3, CC-BY-SAv3, GPLv2, GPLv3

1Approximate number of freely licensed voice recording sets

Non-free resources

Following asset resources are incompatible with free licenses. They need to be avoided when creating or copying art assets for open source game projects.

  • CGTextures prohibits redistribution and relicensing as open source.[5]
  • Mayang's Free Textures prohibits competition.[6]
  • Soundsnap prohibits redistribution.[7]
  • ShareCG has no clear or free-license-compatible terms specified.

References

  1. Email: They are completely free with no usage restrictions at all. I think I'd probably frown on someone grabbing them all and then putting together a texture CD and selling them - but I'm not doing anything to stop someone from doing that.
  2. Image*After's GPL license
  3. FAQ about license for the Blender Open Material Repository
  4. Obiwannabe license information
  5. CGTextures license
  6. "You may not sell any of these textures in an unmodified form, or any derived works where the product you are selling is still a texture and is likely to compete with this website.", as seen at the bottom of their textures page.
  7. Soundsnap license.