Very fun puzzle, and if you can solve a normal Pyramorphix, you'll be able to figure this one out. The only issue is that it's a bit stiff, although it gets better with turning. I definitely recommend getting this puzzle, but be warned that it's not made for speedsolving.

2x2x2 Pyramorphix Circle Plus.

Not sure if I should considerate it as a 2x2x2 with more center pieces or a 4x4x4 with less pieces. :)

It's a nice cube. I recommend it.

This is a junior pyramorphix with extra pieces (edges). These edges can add more shape-shifting to the puzzle. The centers cannot be rotated, but the corners (tips). The edges easily pop out, so be gentle with this puzzle. The solve is relatively easy.