Coder. Safecracker.
Press the buttons, slide the switchers and rotate the coding drums to switch all the buttons on, to switch all the switchers on, to set values of all the coding drums to 1.
Buttons, sliders and coding drums in the Coder have connections. When you change the value of an element, values of the connected elements change.
Some of Coder levels have sublevels which open when active sublevel is solved.
The game Coder has 50 puzzles and three bonus levels. Bonus levels include more than 1 million puzzles.