Solitaire Royal Upgrade: Drag-and-Drop & 3D Layered Cards

A Royal Velvet Card Room

We took the visual theme of Royal Castle Solitaire to the next level by redesigning the canvas from a flat board to a premium virtual gaming table. The background is now drawn using a radial gradient (fading from bright emerald green to deep dark green), simulating radial card table lighting. The board is framed with double wood-and-gold borders and circular brass studs.

The radial gradient green felt, rounded cards, and detailed castle crest create a sharp, clean table.

Layered Drop Shadows & Rounded Geometry

Cards now render with clean rounded corners (5px radius) and gold outlines. Every face-up and face-down card casts a soft drop shadow. In the tableau columns, cards stacked on top of one another cast cumulative shadows on the cards below, creating a beautiful 3D layered stack depth.

Multi-Card Drag-and-Drop and Touch Support

To streamline play, we added a complete drag-and-drop interaction loop. Players can grab any face-up card or stack of cards in the columns and drag them across the table. Dragged cards receive a larger, softer shadow blur to simulate them being "lifted" off the felt. The coordinate parser maps mouse and touch events natively, letting players play smoothly on mobile devices while preserving click-selection as a fallback.