Stream

A stream is a special agent that costs $40 MM. It is placed by drawing a line from one side of the screen to the other in just about any pattern, although it can only be 15% longer then the distance from one side of the screen to the other. It flows from where you started drawing it to where you finished drawing it. (Note: Can only be used on land terrain, or it wouldn't make sense) It is 20 px wide, and can be placed across the track (well, it wouldn't work otherwise), and has a 10% chance to sweep any Bloons that cross it that are ranked below rainbow away in the direction the stream is flowing, following the path of it. However, if the stream touches the track again, the Bloons will leave the stream and go back to the track. If the Bloons are swept off the edge of the screen, they will enter the screen at the nearest entrance.

Pro
Pro upgrade - Larger Stream!

The stream is now larger (30px), now having a 15% chance to sweep away Bloons. Nuff said.

Epic
Epic upgrade - Flood!

Flood ability - Causes the stream to flood for 10 seconds, turning it brown and making it 50px in size! It will sweep away any non - M.O.A.B Class Bloon, and Bloons will not be able to return to the track during the flood. They also have a 10% chance to get popped by one layer, which is refreshed every second. After 10 seconds, the water level in the stream will fall for 5 seconds. Bloons above zebra will stay in it during this side, but any Bloons above zebra that aren't already in the stream can not get swept away during this time. Once the stream falls to normal levels, any Bloons above rainbow that are already in it will escape to the nearest section of track. This has a 120 second recharge time.