很久前在国外的网站上看到的，大家慢慢找 希望有收获
Here they are:
http://tsgk.captainn.net/
http://www.bd.turbocomix.com/spritesheets.html
http://www.panelmonkey.org/category.php?id=1&theme=1
http://munkki.net/index.php?sec=sprites
http://www.reinerstileset.4players.de:1059/index.htm
http://www.molotov.nu/?page=graphics
http://www.cs.uu.nl/people/markov/gmaker/resource.html (by Spudder)
http://www.rmxp.net/resources/rmxp/Graphics/
http://www.gsarchives.net/ (by c-gibson-s)
More than 1300 images of Mega Man sprites:
http://sprites.planet-megaman.com/
Sonic sprites:
http://www.planetdreamcast.com/sonic/see/sprites/index.html
The below were given by codemonster:
Emugifs
http://www.emugifs.emuita.it/home.htm
Fenrir's Sprite Domain
http://www.geocities.com/cyberfenrir/
Mario Fan Games Galaxy
http://www.mfgg.net/resourcedb.php?cat=sprites&subcat=sheets
Mortal Kombat Warehouse
http://www.mkwarehouse.com
Nintendo Sprite Sheets
http://www.koolpages.com/nintendojjw/sprites.html
Super Mario Portal
http://www.marioportal.com/modules.php?name=Content&pa=showpage&pid=1498
The Leaf Forest Zone
http://dioxaz.free.fr/index_en.html
The Spriters Resource
http://clik.to/ninsprites
Zelda Fan Game Network
http://zfgn.gunsha.com/resources.php?page=sheets
Backgrounds
Background HQ
http://www.bghq.com
Androcity Backgrounds
http://androcity.com/backgrounds.php
Tilesets
Kyodai Mahjongg Tilesets
http://www.vikinganswerlady.com/kyodai/
Mugwump Dillard's Kyodai Mahjongg Tilesets
http://www.haywired.com/mugwump/
EDIT 10/24: The below were suggested by prh99:
Tantalus Resources
http://olls.impressur.com/
RPG Underground
http://www.gaminggroundzero.com/
First Seed Material(Site in Japanese)
http://www.mogunet.net/~fsm/
NES SNES Sprites
http://www.nes-snes-sprites.com/