Health bars, inventory slots, dialogue boxes and ability effects are a big part of a metroidvania. These are free if they help:
- Pixel art UI kits (free Lite versions): Fantasy, Horror, Retro arcade, Cyberpunk neon and Cozy: panels, dialogue boxes, buttons, toggles, hearts, slots and bars, at native size and 4x.
- Pixel Cursors & Icons: 46 cursors and icons (hearts, coins, keys, weapons, UI symbols).
- Essential UI SFX: 150 menu and interface sounds, WAV + OGG.
- Magic Spells VFX Lite and Magic Spells SFX Lite: pixel art spell effects and 30 spell sounds for abilities.
Everything is made from scratch with code: no third-party art or samples. Free for commercial use, no credit required (if you want to list it, "Willosuna" is fine). Check the jam rules about pre-made assets first. Good luck!