Mushy v1.2 --
Build spires of once-were-chairs, wander through a faded landscape of assumed logical choices, and sail the mushy seas of half-remembered pixel art conventions.
Included in this pack: 440 64 x 64 pixel tiles, including sets trained on; plants, building materials, flooring, ground, water, rocks, objects, and blocks. Download either a complete spritesheet or the individual tiles.
Update, 2/4/19 -- This pack has been extended with 384 new tiles trained on every set at once! They're Mushy_Extended in the downloads.
This free to use tileset was generated by DCGAN-tensorflow, running on tens of thousands of creative-commons tiles, including the work of;
Opengameart contributors: darkrose, Yar, Seth Galbraith, Clint Bellanger, rubberduck, artisticdude, Amstrad, Kenney, Varkalandar, pixel32, p0ss, IsometricRobot, Jetrel, FLAG, bart, yd, Matt Merkulov, JanaChumi, rrexky, Glondo, Sidhi0n, paulb, Bleed, 2DPIXX, Varkalandar (Hansjörg Malthaner), surt, formconstant, Leonard Pabin, and extradave;
Deviantart contributors: neoz7, Unit 35, Redknight91, frootzcat, liteady73, and spasquini;
itch.io contributors; hernandack, Devil's Work.shop, AlexKingAK, jaqmarti (Jaqueline Martin), and mewki;
and the contributors to RLTiles (rltiles.sourceforge.net); Denzi, Alex Korol, Edger, Wan-ichi, So-Miya, Haruko Numata, Tatsuya, AllegroHack tiles (Kelly Youngblood, Paul Pliska, John Harris), Dainokata, and Zmy.
(As well as some classic game rips.)
These tiles operate under a CC-BY-3.0 license, please credit it in your projects.
I recommend using them in Tiled, a free map editor.