Spike

A spike is an attack in the  series and Fraymakers that launches opponents downwards. They are very similar to meteor smashes in Super Smash Flash 2 but distinguished by the fact that they cannot be meteor canceled. They are very powerful tools for edgeguarding or scoring KOs offstage.

In Super Smash Flash
Although the How to Play tutorial mentions meteor smashes, meteor canceling is absent from Super Smash Flash. Therefore, the game only contains spikes.

Every character's up and s can spike. Due to the instant-KO attack glitch, however, getting those moves to actually spike is considerably difficult; they will send static grounded opponents upwards, and may strongly semi-spike opponents who are moving horizontally. In order to properly spike opponents, one needs to hit an airborne opponent who is moving extremely slowly, or not at all.

In Super Smash Flash 2
In Super Smash Flash 2, spikes are attacks with downward knockback angles that are lower than 250° and higher than 290°. Any attack between these two angles can be meteor canceled and thus is classified as a meteor smash instead. Certain moves have special knockback properties that allow them to spike under specific circumstances, such as multi-hit attacks that use autolink angles dependent on the character's current movement speed.

Initially, every attack that would knock opponents downwards was considered a spike. This changed with the addition of meteor canceling in v0.8a of the demo, in which every attack that sent opponents downwards instead became a meteor smash. Spikes were later re-introduced alongside meteor smashes in Beta 1.2.3.1.

List of spikes
The list below includes all spikes present among playable characters in SSF2. Note that this list only includes moves that can naturally spike without using knockback stacking or other unorthodox situations.

In Fraymakers
In Fraymakers, all attacks with downward knockback are considered spikes, as meteor canceling is not present in-game. The announcer often calls out spikes that land on off-stage opponents.

List of spikes
The list below includes all spikes present among playable characters and Assists in Fraymakers.