On-Track

On-Track is an attack style characterized by an attack going on directly onto the track and staying there for a specific amount of time where the bloons will go over it. It is part of the damage types family. Any attack that is On-Track will only affect a specific part of the track.

On-Track is represented on Bloons Wiki as, the upgrade icon for Smart Spikes in Bloons TD 6, as this depicts a trio of spikes targeted within proximity of a square target reticle.

Towers or upgrades must be in range of the track in order to exercise this attack style.

On-Track is core element of Spike Factories as they have this attack style as a base tower.

Categorization cases
All attacks that are considered On-Track:
 * All Spike Factories have On-Track by default and will guarantee have this property.
 * Bloon Trap is considered On-Track.
 * Wall of Fire is considered On-Track
 * Relentless Glue's glue blobs are considered On-Track.
 * Necromancer: Unpopped Army's undead bloons are considered On-Track as long as Necromancer has undead bloons in its graveyard.
 * Caltrops is considered On-Track.
 * Acid Pools is considered On-Track.
 * Cleansing Foam is considered On-Track
 * Gwendolin's Cocktail of Fire is considered On-Track
 * Obyn Greenfoot's Brambles and Wall of Tree is considered On-Track
 * Sauda's Leaping Sword on-track sword is considered On-Track as long as there is at least 1 bloon on the screen for the leaping attack to target onto.
 * Ezili's Sacrificial Totem is considered On-Track as long as the player has enough lives to sacrifice.

Attacks that resemble On-Track but are not true On-Track:
 * Quincy's Storm of Arrows is not considered On-Track since the arrows last until they hit the ground.
 * Icicles is not considered On-Track as the shards appear only as a result of bloons being frozen.