From publisher's webstite:

Dragon's Lair for Nintendo's DSiWare packs the full arcade experience into one portable package! You play as Dirk the Daring, a valiant knight on a quest to rescue the fair Princess Daphne from the clutches of the evil dragon Singe. Navigate Dirk through a perilous and richly-animated world from animation legend Don Bluth. This download features every move and every scene of this timeless, groundbreaking arcade classic. Play the authentic arcade experience, or select the "home edition" to see and play extended and deleted scenes. Play linearly, or enjoy the "randomised" arcade experience. Confounded by a scene? Practice with the "infinite lives" option. Featuring accessible game play, rich animation, and high score boards for the competitive, Dragon's Lair for the Nintendo DSi is sure to appeal to everyone!