Most unique thing is probably how much race matters to your gameplay experience (to the point that I kind of despise it). 3 planets 3 races, your races determine your starting planet and you receive different effects due to your race/not being a race on planets. Some other notable mentions are: knowledge system that works by awarding you upgrades from "experiencing the game" through different means rather than grinding mobs (no levels in this game). Said to have heavy environmental interaction with your skills.