Free Game Icons
Icons are read at a glance and at small sizes, so silhouette beats detail every time. An icon that's legible at 32 pixels will work everywhere; one that needs 128 pixels to make sense will fail in the inventory slot where it matters. The CC0 sets below are drawn as families, which means your health potion and your mana potion will look related rather than borrowed from two different games.
Everything here is free to download from the source site. These results come from Kenney, OpenGameArt. Licences vary by file and are shown on each card. Nothing is hosted by us, and every link goes to the original page so you get the current version and the real licence terms.
Board Game IconsCC0
Game IconsCC0
Game Icons (Expansion)CC0
Game iconsVarious CC
700+ RPG IconsVarious CC
Game icons (expansion)Various CC
496 pixel art icons for medieval/fantasy RPGVarious CC
Gem IconsVarious CC
Skill, item and spell iconsVarious CC
Armor Icons by Equipment SlotVarious CC
Painterly Spell Icons part 4Various CC
140 Military Icons Set (fixed)Various CC
Game icons (fighter expansion)Various CC
Game Icons Fantasy thingsVarious CC
Painterly Spell Icons part 3Various CC
100 glitch iconsVarious CC
UI IconsVarious CCSearch all sprites in the live asset library →
Using these sprites in a game
Pack sprites into an atlas before shipping. One texture with everything on it means one GPU upload and one draw call for your whole interface, instead of one per image, and that's the difference between a smooth 2D game and a stuttering one on mobile.
Keep the source art at its authored resolution and scale in-engine rather than resizing the files, especially for pixel art, where any resampling that isn't a clean integer multiple destroys the edges. Set your texture filtering to nearest for pixel art too, or everything comes out blurry.
For engine choices in 2D, see Phaser vs Defold and Construct vs GDevelop.
Licences, briefly
CC0 means public domain: use it commercially, modify it, ship it, no credit required. That covers everything from Kenney, Quaternius, KayKit, Poly Haven, and AmbientCG.
Freesound and OpenGameArt host a mix. Some files are CC0, others are CC-BY (credit required) or CC-BY-SA (credit required and derivatives must carry the same licence, which is a real constraint on a commercial game). The licence is set per file by whoever uploaded it, so check the source page before you ship.
The complete guide to game asset licences covers what each one actually requires and where teams usually get it wrong.
More free sprites
Free UI Sprites and Game Interface Packs · Free Platformer Sprites and Tilesets · Free Game Tilesets
Or search every source at once, and see the complete guide to free game assets for the full picture on where this art comes from and how to use it.