Hidden Objects Mysterious Artifacts. Billy the Treasure Hunter is back! Help Billy uncover ancient artifacts in this hidden object game. Discover beautiful hidden objects in different settings. Features: Mysterious ancient theme Over 50 objects to discover – Jewels, ancient scrolls, magic staffs and more Need help? Use hints by earning hints points (keys). Complete tutorial system Over 9 challenging levels in 3 different settings. You can play this game on all devices. Enjoy and have fun in playing this free online mobile hidden object game on Hidden4Fun. Good luck.