Dartbooth

I'm thinking... all towers so far can't be placed on the track, then how about a tower that can only be place ON the track?!

Dartbooth
The Dartbooth is like a tollbooth on the track, except... it'll give punishing darts instead of passing tickets. It takes 1 second to prepare for a "service" though. Every bloon that passes this booth will be popped by 1 layer, but it takes 1 second to "reload"

Price: 700$ on Medium

Faster Service
The monkeys at the booth have been trained to work faster! Now they only takes 0.5 second to prepare for a service!

Price: 600$ on Medium

Outpost
The monkeys have decided to make this booth an outpost! Now it has a range circle and can enhances the range of the towers in its range by 30% in radius!

Price: 800$ on Medium

Instant Service
These monkeys work so quickly it doesn't take anytime to prepare a service at all!

Price: 2500$ on Medium

MOAB Service
Special: Even MOABs and BFBs pay! When this ability is activated, any MOAB or BFB that passes this gate will get a special "ticket" that instantly pops it. Works for 10 seconds!

Price: 8500$ on Medium

Expensive Ticket
The Dartbooth has recently published a new kind of ticket! Bloons must pay 2 layers to get it!

Price: 1000$ on Medium

Premium Ticket
These tickets are too expensive they're sold for 3 bloon layers!

Price: 1600$ on Medium

Long-term Ticket
The bloons must gradually pay for these tickets over time so they became so angry that they burnt after getting these!

Price: 1400$ on Medium

Gate of Hell
The monkeys have published some Hell Tickets with the Demon! These tickets cost 5 bloon layers, no less!

Price: 6660$ on Medium