Polarity

Polarity is a mechanic of explosions. Positive polarity explosions produce explosion clouds that dissipate into empty tiles after a short delay. Negative polarity explosions produce infotrons.

Explosion polarity also affects chain-explosions. If the chain-explosion starts with an explosive element with negative polarity - it will be passed to subsequent explosions. If another negative polarity element appears in the chain – it will flip the polarity sign and the explosion will have positive polarity.

Positive polarity explosives pass the current chain-explosion polarity without change. Negative polarity explosives will flip the sign.

Polarity is the reason why a chain-explosion that starts with an electron and continues with snik-snaks and orange disks will spawn infotrons. It is also why an electron chain-exploded by another electron will not spawn infotrons.