The Ingame Medallions (That each represent an Aspect/Sefirot) are also 6 in total, but with the Triforce in the middle it makes 9, and if we count the inverted invisible triangle (Qlippoth?) in the middle of the Triforce we get 10, like a complete tree of life.

The ingame Rainbow Bridge is also formed by the powers of these 6 Medallions combined.