Death Ray is a card that projects a beam from your tower, sweeping around it and destroying any standard enemy the beam touches. It is one of the cards that can clear large numbers of regular enemies automatically, but it comes with clear limits on what it can affect.
Description
Death Ray fires a beam from your tower that rotates around it, killing every enemy the beam comes into contact with. It works as an automatic area-clearing tool, sweeping through waves of regular enemies without any input from you once the card is equipped.
Use
Death Ray cannot kill bosses, and it also has no effect on any enemy sitting inside a protector's radius. Keep this in mind when relying on it as your main clearing tool, since protected enemies and bosses will need to be dealt with by other means. At maximum level, the beam's rotation covers more than 180 degrees, widening the area it sweeps with each pass.
Double Death Ray
Double Death Ray is a lab upgrade unlocked through Milestones at tier 3, wave 300. Once researched, each Death Ray activation has a chance to trigger a second beam, and investing more levels into the lab raises that chance. When the upgrade triggers, the second beam always appears directly opposite the first and rotates in the same direction around the tower, effectively doubling your coverage. The lab has 30 levels; the per-level chance values are shown in the table below.
| Level | Time | Cost | Value |
|---|---|---|---|
| 1 | 0d 1h 0m | 2,500,000 | 1% |
| 2 | 0d 9h 21m | 2,910,000 | 2% |
| 3 | 0d 17h 53m | 3,620,000 | 3% |
| 4 | 1d 2h 55m | 6,130,000 | 4% |
| 5 | 1d 12h 49m | 14,340,000 | 5% |
| 6 | 2d 0h 6m | 35,750,000 | 6% |
| 7 | 2d 13h 17m | 82,660,000 | 7% |
| 8 | 3d 4h 59m | 173,370,000 | 8% |
| 9 | 3d 23h 50m | 333,380,000 | 9% |
| 10 | 4d 22h 32m | 596,590,000 | 10% |