Piskel
An open-source pixel editor with layers, live preview, sprite-sheet export, and GIF export.
Why use it
Designers, artists, and jam teams can create and share small animated assets without installing a desktop suite.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
Advanced painting, color management, and large-project organization are limited; do not place confidential art in public galleries.