You probably shouldn't play with matches. Unless your "match" is a game in ShellShock Live, where you can use a match in your match to match your opponent in your match. This description probably isn't very helpful thus far, so it'll just be left at this: Flame fires twelve projectiles with a large spread that burn your victim trice at 1HP damage a piece. It may not be very effective, but it could save your rear-end from getting burned in a bet!
Just like Flame, Blaze burns twice, and that isn't very nice. Fifteen projectiles dealing 4HP damage a piece adds up quick, so be sure to wear your oven mitts when handling this one.
Inferno is nothing to disco about. Fifteen projectiles dealing 6HP damage a piece completely destroys whatever it lands on. It's possible one could find the weapon boring, but it's also possible you die on the receiving end. Never underestimate Inferno.
The spread from this weapon is caused by each projectile being shot with a varied angle, similarly to Stream.
This weapon is most effectively used at close range against a single target when used with at an angle of around 45 degrees, as this shot allows most of, the projectiles to hit a single target, as long as they're on same level as you.