Finally having the opportunity to go through Nintendo's Virtual Boy library for the first time we begin with 3D Tetris and well it's functional I guess.

This is Tetris but the twist is you're viewing it from this awkward top down view that shifts around to give you a better view of the sides. Instead of being a flat 2D plane that your blocks build on, you now get a full cuboid like arena to put your blocks in. The aim is the same, fill one line of the cuboid to clear that line and earn points. You can build the stack higher to clear more lines at once and you can now rotate the blocks in full 3D directions by using the right d-pad.
It's a good idea on paper but when you need a simplified view to the right to show where your blocks are lined up, it kinda shows how awkward the constantly shifting view of the main arena.

There's a puzzle mode in addition to the main one where you use a set number of blocks to build a shape shown at the start. It's.... fine I guess.
The other mode places a spike like object in the centre that will delete blocks you place there so you can't place anything until the final block to clear the line. It's an interesting idea and it works well enough.

But yeah, puzzle games are at their best when they're simple and this one unfortunately complicates things a little too much to try and make it work in 3D. The shifting view point and everything being just red and black makes it awkward to keep track of where your blocks are and with higher speeds it's difficult to manage rotating your blocks quickly in a 3D space. Good idea on paper, just a little bit too complex to pull off on such limited hardware