Mastery Mosaic — every game a RetroAchievements username has mastered, laid out as a grid of box art with a settings panel for the profile header, game titles, platform, mastery dates, colours, layout and sorting.
Mastery Card — a single-game card built around one mastery, with its own header, icon glow, platform, date and card styling, and a dropdown to switch which mastery it shows.
Downloads both the mosaic and, soon, the card as a PNG.