Here are all sphere locations for Rogue Heroes: Ruins of Tasos game.
Tufton Fields (light green map)
#3 the way to here is from the Kezar Falls
#7 jump down from the high level south of it, the way up here is through the Overgrowth
#10 go through the water from Kezar Falls downstream on the river
#16 and #25 the way is from the mines
Crumwell Swamp (mud map)
#24 is the cave exit, the cave entrace is a little bit SW from #14
Overgrowth (fire map)
Sekoset Mountain (snow map)
You can found more chests than spheres in this map.