Free Pixel Effects is a set of 30 one-shot pixel art effects for 2D games: 12 explosions, 10 hit sparks and 8 magic bursts, from 16 to 64 px, in six color sets (fire, gold, toxic, frost, arcane and white).

Each effect is a PNG sprite sheet with a JSON frame map and a Godot SpriteFrames file. Drag the .tres onto an AnimatedSprite2D and call play(); it plays once at the sheet's speed. Set Texture Filter to Nearest so the pixels stay sharp.

The pack is CC0, so you can use it in anything, commercial included, with no credit needed.

The effects are drawn by code with Puff, a pixel effect generator. They're all in it, so you can try them in your own palette, or at another size, in your browser: https://cs5475.itch.io/puff

More effects: seven paid packs on itch.io in the same style, with the same files (sheets, JSON, SpriteFrames): elemental spells, heals and support magic, portals and summons, explosions, melee slashes and their hits, spell projectiles, and looping status effects such as poison, stun and shield. $1.99 to $2.99 each, or all seven for $9.99, and 20% off until Nov 17 (https://cs5475.itch.io/pixel-battle-effects-complete). They aren't CC0: use them in any game, commercial included, but don't resell the files.