Bloontonium Reactor is the 4th upgrade of the Monkey Sub in Bloons TD Battles 2. It is similar to its BTD6 counterpart except that its damage type is changed from Normal 
to Sharp 
(unless with Heat-Tipped Darts), the upgrade is more expensive, and it has lower pierce.
It costs $2800.
Strategy
Summary
TBA
Tips
- TBA
Version History
- Initial release (compared to BTD6 during Version 28.0)
Bloontonium Reactor damage type changed from Normal 
to Sharp unless given Heat-Tipped Darts- Bloontonium Reactor costs more ($2500 --> $2800)
- Bloontonium Reactor base pierce reduced (50 --> 30). Also applies to crosspaths with Path 2.
- 4-1-0: 70 --> 50
- 4-2-0: 100 --> 80
- [Likely a bug] Bloontonium Reactor deals increased damage to ceramics (+0 --> +3)
Trivia
- The reactor's damage type nerf in BTDB2 makes its radiation one of the few Sharp-type attacks to not involve a sharp object, another example being Party God's Off the Hook shockwave ability in Bloons Adventure Time TD.
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