Here is a technical demo of my open-source game. It lacks a menu and any settings, and the graphics are highly sketchy. My main goal was to test the idea of the gameplay.

Summary:

The game field is represented by a set of blue cells. Above them, there is the second layer of green cells. The player can control this group — move, rotate, and put it with the blue cells (only on the free spaces). After merging, the cells evolve according to the rules of the “Life” game for one generation, then new green cells are created. The player’s goal is to minimize the amount of blue cells.

See details on its page: https://thewizardplusplus.itch.io/biohazard