I offer you a great game for which you may spend more than one evening. This game belongs to the category of those in which you can easily learn, but it is difficult to become a professional. Yes, and become a professional is not necessary. This is just a great time killing. At the heart of the game is physics. Here, with the help of about 40 materials, almost everything can be done. Calculator, volcano, nuclear bomb (or reactor, as you like), a flamethrower. Yes, I just do not have enough imagination for everything.
For example, here is a real binary calculator. ')
And here is a decimal calculator.
The game has a great engine for the realization of many of your ideas! To control the game you need only a mouse. But for convenience, the creators have provided hot keys: Z - zoom (just an indispensable tool) Shift - draw a straight line from the selected material. Ctrl - draw a rectangle S - save area L - load the area and place it in the right place. C - change view Q - exit P - take a screenshot
There is a library in which you can download any project made by another person. To do this, however, you must register.
From materials there are metal, fire, lava, electricity, plutonium, neutrons, water, different types of walls, and so on. Do not forget about the material CLNE, which endlessly reproduces the substances that touch it. Using plutonium you can assemble a nuclear bomb. Only plutonium must be poured carefully, otherwise it will begin to interact with itself from exceeding the critical mass and careless handling. For example, you can make a controlled reaction of a nuclear reactor.
All substances interact with each other, simulating real reactions. Water extinguishes fire, fire burns wood and so on 2D does not spoil the picture of the world at all. You can arrange large-scale explosions, or make waterfalls, you can even make a nuclear reactor, since plutonium and a source of neutrons are in the arsenal of substances. Electricity is transmitted by metal and water, with his help to undermine C-4, which is also available. You can also simulate the operation of electronic components.
Also in the game there are several types that are switched by the C key (or the button located in the lower right corner) The first most spectacular shows the state of affairs "as it is."
There is also a form with which you can recognize the pressure at each point, the direction of the wind, the plumes of particle motion.
Craftsmen collect from the available materials a variety of things.