Pencil2D
A lightweight open-source 2D animation tool with bitmap, vector, onion skinning, and basic camera layers.
Why use it
It quickly validates character motion, cutscene boards, and frame timing before work enters a production pipeline.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
Complex rigging, compositing, and batch sprite-sheet output are limited; long shots need stronger organization.