When comparing IndieGameMusic.com vs OpenGameArt, the Slant community recommends OpenGameArt for most people. In the question“What are the best sources of royalty free game assets?” OpenGameArt is ranked 4th while IndieGameMusic.com is ranked 8th. The most important reason people chose OpenGameArt is:
All assets made available through OpenGameArt must be licensed under one (or more) of the following: CC0, [OGA-BY](http://opengameart.org/content/oga-by-30-faq), CC-BY, CC-BY-SA, GPL or LGPL.
Ranked in these QuestionsQuestion Ranking
Pro Exclusive licensing available
Some tracks are available for exclusive licensing. They become yours alone, and get removed from the track listing.
Pro Supports asset requests
IndieGameMusic.com provides a searchable database of musicians available for project work.
Pro Comprehensive tagging and search facility
Tracks may be searched by artist, genre, mood, license, file type, license fee, and other criteria.
Pro Committed to free/open licensing
All assets made available through OpenGameArt must be licensed under one (or more) of the following: CC0, OGA-BY, CC-BY, CC-BY-SA, GPL or LGPL.
Pro 2D and 3D art
OpenGameArt has both 2D and 3D art assets.
Con Some assets may have restrictive licenses
Hosted tracks are permitted to enforce a Freeware license, which restricts their use to freeware projects only. The search system allows filtering by license. Track listings are visually tagged with available licenses.
Con Music only
IndieGameMusic.com hosts only full-length musical compositions, not sound clips or assets of any other type.
Con Mediocre organization and search functionality
The curator of OpenGameArt acknowledges that the tools for finding the assets you need are sub-par. Correcting this is a near-future priority for improvement, and as of September 2014 is the next milestone goal of the site's Patreon campaign.
Con Assets may have restrictive licenses
OpenGameArt hosts art under any of several licenses, some of which may not be suitable for commercial projects or for release on certain distribution platforms. Careful review of which licenses are compatible with your project is essential. The site's search facility allows filtering by license.