After you've rolled the dice or pulled the slot machine handle one too many times -- and you're ready to quit while you're ahead -- ease those aching limbs over to Aji, part of the resort adjacent to Gila River Casino at Wild Horse Pass. The 17,500-square-foot spa oozes serenity, from the sleek details of the Native American decor to the sweet, warm fragrance radiating from melted wax diffusers. There's a salon, a fitness room that's as state-of-the-art as it gets (each treadmill and cycle has its own flat-screen TV and tiny DVD player), a pristine outdoor pool just beyond the glass doors, and 17 treatment rooms where you can indulge in all the pampering you can handle. Try the "Juhk" Aji Rain Facial, 50 minutes of slathering and massaging that'll relax you as well as a full night's sleep, or the "Thash" Native Sun Wrap, where you'll lie in a futuristic steam capsule (something new to the Arizona spa scene) to let exotic oils melt into your skin before a massage therapist works you into submission. Save a few quarters for video poker, then start all over again.