I just finished playing through a good bit of Mars: War Logs, by game developers Spiders. It may not be as polished as a large budget action RPG, but, boy, is it intriguing. The plot sees the player assuming the role of Roy, a POW on Mars, who is attempting to break out of his captives--Abundance--prison camp. The game sports all of the prerequisite RPG elements expected of a game sporting the genre. There are skill trees, crafting, attributes, leveling, loot, upgrades and more.
I find the skill tree to be decently balanced, thus far. There are three branches which themselves branch into numerous specializations or areas of focus. Combat tree focuses on durability, evasion and parrying, for instance. Then there is the Renegade tree, which sports a focus on tactics such as stealth attacking and throwing sand/dust in the enemies eyes--at least, the enemies who don't sport helmets or goggles, any way. Finally there is the Technomancer tree, this particular branch is locked during the demo, but it serves up electrical powers and Mars magic of sorts.
