Generate and postprocess 2D game sprites and animation sheets: pixel-art characters, NPCs, creatures, spells, projectiles, impacts, props, summons, and transparent PNG/GIF exports. Use when building browser games that need real sprite sheets (not code-drawn placeholders), matching a map art style, or producing magenta-background sheets for chroma-key cleanup. Triggers on "sprite", "sprite sheet", "animation sheet", "pixel art character", "walk cycle", "attack animation", "projectile sprite", "2D game asset".