A projectile is an attack or object in the Super Smash Flash series or Fraymakers that acts or operates independently from the character who uses it. Common examples of projectiles include Mario's Fireball in the Super Smash Flash games, Welltaro's bullets in Fraymakers, and thrown items. Most characters have at least one projectile attack, while a few have several attacks that create projectiles. Projectiles can aid the player in many ways, such as for approaching, projectile camping, or simply attacking an opponent from a distance.
In the original Super Smash Flash, a projectile's damage and knockback can be altered if the player performs another attack while the projectile is still active. For example, if Mario uses his up attack directly after using Fireball, the projectile will gain Mario's up attack hitbox stats, causing it to easily instantly-KO opponents. This phenomenon is called projectile augmenting, a term coined by Dark Ermac.
Using Inhale to copy opponents, Kirby can use all the other characters' neutral special moves, including characters with a projectile as their neutral special. Each retains its properties from its normal user.
Pac-Jump as a move is not a projectile itself, but the trampoline counts as a projectile. Both the Fire Hydrant and the water that shoots from it count as projectiles. The water is both reflectable and absorbable, but the hydrant itself is neither.
Both the bottle of Holy Water and the flames released from it count as projectiles. The bottle can be reflected and picked up, whereas the flames are also absorbable.
A flaw in Super Smash Flash makes it so that only one projectile spawned by a character can be on-screen at the time; launching another one while the former is still visible will cancel out the latter, making it disappear. The sole exceptions are Master Hand's bullets.