Yun Cong Long is a Playtech video slot built on a 5x3 reel layout with 40 fixed paylines. The game uses a Chinese-mythology theme, with dragon imagery, a gold-and-red colour scheme and a set of low-value card symbols alongside higher-value themed icons. The paytable includes the Dragon Wild, which is stacked on all reels and substitutes for most symbols.
The Yin-Yang symbol acts as the scatter and triggers the Dragon Free Games feature when three appear on reels 2, 3 and 4. During the free spins round, more dragon symbols are added to the reels, increasing the chance of line wins. Additional Yin-Yang scatters can award extra free games, allowing the bonus round to be retriggered.
A demo version is available for players who want to play for free and practice before playing for real money. The controls include autoplay, turbo mode, line selection and bet adjustment, while the rules state that wins are paid left to right on active paylines and only the highest win per line counts.