Ray of Doom

"The Ray of Doom is a persistent solid beam of bloon destruction."

- Official Description

Ray of Doom is the final upgrade of Dartling Gun on Path 1, costing $46750 on Easy, $55000 on Medium and $59400 on Hard. While the description says that it shoots a solid beam that destroys every bloon in its path, the beam actually flashes. The Ray of Doom's beam will continuously flash regardless of the cirumstances, however this is purely cosmetic - the ray's area of effect is not affected by the flashing.

The Ray of Doom has a pierce of 100, and pops bloons every frame - meaning that even Ceramic Bloons are popped in well under a second. This upgrade is probably one of the best upgrades for popping normal Bloons.

Trivia

 * Ray of Doom is similar to Death Ray Vision in Bloons Super Monkey and is likely to be based off it.Ray of doom.png
 * It may have been possibly inspired by a weapon invented by Nikola Tesla called the "Death Ray". It could destroy any aNoflashROD.pngft in combat. However, unlike the Bloons TD version, it never got off the drawing board.
 * This upgrade is notoriously bad against individual M.O.A.B. class bloons, as it has a popping pierce of 100 but only pops 1 layer per frame. This means it effectively loses 99% of it's firepower. It is still more than a match for an individual MOAB or BFB however, and indeed can take down large groups of them quickly. It only struggles against the mighty Z.O.M.G..
 * RODIcon.png Ray of Doom used to have infinite pierce. This was changed to 100 in an update.
 * It would make it overpowered without the pierce limit.
 * A Ray of Doom can beat an entire MOAB and all bloons within it in any track. 2 of these can destroy a BFB, and 6 of these can destroy a ZOMG.
 * The Ray of Doom can pop leads but the Laser Cannon cannot even though they appear to both be lasers.
 * The HAZMAT suit looks like the one for a Glue Splatter Glue Gunner, but has a gas mask like the Bloon Liquefier Glue Gunner's.
 * This is the second most expensive upgrade in BTD5, after the Temple of the Monkey God.
 * The Ray of Doom will pierce through anything, but if it has reached its pop limit, it will still pierce through but not pop.
 * The Ray of Doom only stops shooting in between Rounds. It will constantly shoot the ray during rounds, even if there are no Bloons on screen. It will also constantly shoot in Sandbox Mode.
 * This is one of the few lasers that can pop Lead Bloons. The others being High Energy Beacon and Meerkat Spy Pro.
 * In Bloons TD5 iOS the Ray of Doom cannot pop lead bloons without Depleted Bloontonium.