Metallic Lab

Metallic Lab is an Expert track, featuring an always-changing track.

Bloons start at the left path. The middle rectangle is always changing : every 5 waves, it will change to a different track : an giant piston will get on the rectangle; postponing a new map. The towers that were on it get sold.

The towers outside of the rectangle do not get changed.
 * Track 1 - Straight line. Hardest track.
 * Track 2 - Forest-like track. You can place towers on the big tree.
 * Track 3 - Lava track. You can place towers on the coal bits.
 * Track 4 - Temple track. A giant 4/2 temple is at the middle; you can activate it for 20 000$. It acts like a maxed temple. Missles are Assasins.  Ice can freeze MOAB-class and leaves ice where it goes, slowing bloons ( think of it like road spikes that freeze ) Glue can glue MOAB-class and is black. Darts and Blades stun. ( The temple uses both darts and blades ) Blades spin like Maelstorm, in addition to the normal blades. Giant ROF spits out every second. You can place towers on the side, the more you place, the better sacrifices you get : at first you get normal maxed sacrifies, but you get sacrifices abouve as you advance. it goes like that :
 * 5 000$ in towers and upgrades on the sides of the Temple - Giant Ring of Fire
 * 10 000$ in towers and upgrades - Maelstorm-spinning blades
 * 20 000$ in towers and upgrades - Stunning darts
 * 50 000$ in towers and upgrades - Glue
 * 125 000$ in towers and upgrades - Ice
 * 250 000$ in towers and upgrades - Missiles