Myst vs RealMyst

Bit confused. The terms Myst and RealMyst are both being used in reviewing the BFG offering. Purchased Myst elsewhere. Is this the same game with the addition of the Rime Age noted in the description? If so, what am I missing by only have Myst?

RealMyst is done in 3D with 360 movement whereas Myst was 2D. A lot of visual effects added to RealMyst. Same story as Myst with the addition of Rime Age.

You can purchase the entire Cyan series for 1/2 price this weekend if you want them all at a good price. Just search.

Thanks Mcurty. Also belong to that 1/2 price place so yes will definitely be checking out the rest of the set.