Man, tower defense was so last week. I want a game like this...

It's one of the coolest games I've ever played. The devs really know how to create an atmosphere and the energy is spooky as fuck.
From Wikipedia:

The Room is a three-dimensional puzzle game. The game has a minimal story, in which the player is told by letters of a mysterious box in a room in a house; as the player solves the puzzles around the box, more notes from the same author – one who previously had solved the mystery of the box – are found, describing the box's use of an ethereal material called "Null", as well as showing the author slowly descending into madness.

On starting the game, the player is presented with the first of four puzzle boxes. The first box is offered as a tutorial to the game's controls, which demonstrate how to move around the box and interact with the features of the box. The player has a small inventory for items like keys found in compartments in the box. A key inventory element is a special lens that, in-game, allows the player to see things made from the Null element that compose parts of the box. The lens can generally be equipped at any time to see these secrets, often requiring the player to manipulate the view to align secrets into a coherent symbol. The goal is to fully unlock each puzzle box, extracting a smaller but increasingly complex box within it.

I don't know how one would make it a blockchain game but I'd love to see someone try.