Equilibria’s game principle is simple. When you start a level, you have a mass
or marbles in the center of the screen, where you must remove groups of at
least 3 adjacent marbles of the same color by clicking on it.

While you remove marbles, new marbles entering the screen via the marble
throwers at all four sides. Those building up a group of marbles (at least 3,
at most 15) and throwing it into the screen. All of those marbles will center
themselves, which can result in a big regrouping of already placed marbles.
When the marble mass reaches the second outer rows, a red blinking square will
show up, indicating that the situation is now critical. Once the marble mass
reaches the outer row and another group of marbles are shot into the screen at
that position, it’s Game Over.

The game is divided into levels. In each level, you have to score a certain
amount of points by removing groups of marbles (a bigger group rewards more
points). Once the score meter reaches the top, you have completed the level,
and you proceed to the next one.

While playing the game, you can/must use four special marbles (they are
normally shot in like regular marbles): Blocker Marble (does exactly what it
says), Time Marble (will slow down new marble throws for a short time), Bomb
Marble (blows up adjacent marbles), and Ring Marble (blows up all marbles in
the particularly inner square where the marble is located).

The game itself offers three game modes, one is the classic mode mentioned
above and one of the other two is a time based game mode.