You are presented with a board full of balls which have markers pointing in one or two directions.
Click a position to rotate a token clockwise by 90 degrees.

A rotated piece will cause any 'connecting' pieces to rotate as well. A connecting piece is a token whose black line connects with the black line of the rotated piece. Once the connecting pieces have rotated, they may trigger rotations of further tokens and so on. All rotated pieces carry a colour.

After the process has come to a stop, you can click the next token.
If the process does not stop by itself and the loop counter at the bottom border reaches its maximum, the game will end with a win if all pieces have been rotated, otherwise in a loss. In case of a loss you can use the move list to go back and try another move.
You can click the maximum-loop setting at any time to change it in increments of 100.

The goal is to leave no token unrotated. You win if you achieve this in the smallest number of moves, which is indicated at the top border.
Solutions are attached.

Variants with random setups:
There are 32 variants attached which have random setups.
The piece sets they use vary (e.g. from sets which are totally without straight lines to sets with straight lines only).
Some setups can cause runs which do not stop.
Some setups use a wrap-around board (top and bottom, left and right border are connected).
In some variants the board will not be totally filled with tokens.

Variants with fixed setups:
There are twelve variants with fixed setups, half of them on a wrap-around board.

Variants with smallest non-stopping setups:
For details see the associated game text.

Note that there are several alternative piece sets available.

 
This game was inspired by the 'Chain' arcade game by Brain Factor Entertainment Ltd. Chain, however, has a different objective (longest non-infinite run), uses only monochrome tokens and uses only a subset of the piece set presented here.

The complex infinite loops possible with this piece set leads to many interesting questions: e.g., is is possible to build a Turing machine (a computer) from this piece set?