This is not a new idea by any means, considering that I didn't design it into the game.

..However, it's still cooooool. :D

For the same reason it sometimes doesn't explode in the official. When SING particles eat other particles, they increase their tmp count. But those particles tend to be exhumed out of the field in an instant, or devoured by other SING particles, so the chances of getting an explosion aren't 100%.

Cracker told me how, lol. :D *totally abused this*