Click on settings button (in menu it's bottom right) choose "Tutorial Mode". It can help, but you can always turn it off. Sometimes you need to know sth about the puzzles, click the Manual button (it's bottom left)

In settings you can check out credits, variables hide/show the mouse, change volume of music, etc.

GAMEPLAY TUTORIAL:

To restart the level you're currently in, click the purple button above the 1st puzzle. To return to menu right after you played, click "Menu" in settings.

LEVEL 1 (Puzzle 1-3)

For this version variables tell the code e. g. the left variable is 1368 and right is 863.

1. On the 1st puzzle (on the right below the Purp Button) click "8", " 6", "3" OR use your keyboard: 8, 6, 3.
2. On the 2nd puzzle (with an arrow rotating) click on digits: "1", "3", "6" "8". Got something wrong in this puzzle? Got the "1-4-6-8"? No worries! Click "3"!
3. After that... ROTATE! See that thingy above the 2nd? It's the 3rd puzzle (aka "spinner"). While there's a mouse on it, it keeps rotating. With UDSp Keyboard Mode you can make it easier. Or use arrows on keyboard, idk. Continue rotating until it brings you to another level.

LEVEL 2 (PUZZLE 4-5)

1. A Simon Says task and switch buttons. Simon Says: repeat after left panel by clicking buttons on the right one. Once the puzzle turns to "Tick", you solved this puzzle!
2. Switchers: It's also a code e. g. 1-0-1. At the begining those switchers are: 0-0-0. You see? The 2nd one is '0' which the same as in the code. It will light in white. That means it's set correct. Now click on first switcher, your code will be '1-0-0' and it will also light up. Click on the 3rd switcher, and your code is correct! (1-0-1 == 1-0-1)

LEVEL 3 (PUZZLE 6-8)

1. The 6th puzzle is presented by the Caesar Cipher. Click on the circle in the middle to rotate. Once two "letters" are same on both circles, the outer circle rotates once. But to complete the puzzle it should be rotated 3 times at least. I personally recommend to do this puzzle at the end.
2. The 7th puzzle are two variables and a displayer (aka "changing sprite"). One of the variables is an indicator you need to change to make it same with the var below twice. 1st time you need to make to 100. The 2nd time the var will become a random digit. Good luck ]:)
3. The 8th puzzle is so easy, that I'm going to make it harder in the next updates. Just click the switcher. If it points down after your click, it's correct!

LIST OF ADDITIONAL STUFF:

1. Keyboard Mode & Keyboard shortcuts. Press Up/Down keys to change the selection of the objects. Press Space to select it (equals to clicking the object)
2. Mouse settings. Just in case you'd like to have your mouse invissible, idk.