DENZI's public domain art
One of many of Denzi's wonderful pixel art sets. 3/4 overhead orthogonal perspective stuff including dungeon tiles, monsters, items, ability icons, and more.
Much of this artwork can also be found in the Dungeon Crawl Stone Soup set, but a lot of really great stuff can be found here that was not included in that set.
Most of this is 32x32 pixel sprites. There are other 32x32 pixel orthogonal sprites from Denzi, but I've kept them as separate submissions because they are released under different licenses.
This may work well with Denzi's other works