Monkey Engineer (BTD7: M.R)

"Just got his engineering degree from a nearby university. Fires nails at bloons from his nailgun. Can also build sentries and other stuff."

- In-Game Description

The Monkey Engineer is a Primary-class tower which made its debut in BTD5 but hasn't appeared in BTD6 (yet). It has again appeared in BTD7: M.R. It's first path is based on improving the sentries it builds. The second path focuses on improving the power of its nails. The third path makes it to generate bloon traps on the track. It costs $550 on Easy.

Path 1
1. Sentries Builds a sentry on the track which rapidly fires nails at bloons. Only lasts 10 seconds. It costs $600 on Easy.

2. Mass Production Up to 3 sentries can be built around the engineer. It costs $850 on Easy.

3. Cleansing Foam The engineer is equipped with a special fluid dispenser which sprays it on the track and removes camo off bloons. It costs $1000 on Easy.

4. Septic Formula Any bloons that move over the fluid are automatically stripped of 3 layers. It costs $2750 on Easy.

5. Super Sentries The sentries are bigger, faster, and more powerful. They fire 3 nails at bloons and up to 5 sentries can be built. It costs $63,000 on Easy.

Path 2
1. 9-Inch Nails Nails now pop 3 layers of bloons. It costs $650 on Easy.

2. Fresh-Pressed Nails The engineer now uses freshly produced nails which can pop 5 layers and can pop Lead and Frozen bloons. It costs $920 on Easy.

3. Sprockets Installed sprockets in the sentries and nail-gun allow faster shooting. It costs $2050 on Easy.

4. Overdrive Overdrive ability: Tap on a tower and make its attack speed doubled for 15 seconds. It costs $14,000 on Easy.

5. Ultradrive All towers in its range permanently attack 3x faster. Ultradrive ability: Select up to 3 towers and make them super-powered for 30 seconds. It costs $73,000 on Easy.

Path 3
1. Larger Service Area A larger service area allow the engineer to shoot farther. It costs $500 on Easy

2. Discarded Nails Throws discarded nails on the track every now and then and pops bloons which come in contact with it. It costs $890 on Easy

3. Bloon Trap Regularly spawns a bloon trap on the track which collects bloons and self-destructs when full, giving cash. It costs $9200 on Easy.

4. Mobile Trap The trap is now mobile and can be moved place to place. Also has increased capacity. It costs $56,000 on Easy.

5. Ionized Bloon Container Special ionized containers can instantly collect and destroy MOAB-class bloons below a BFB. Also has a massively increased capacity. It costs $95,000 on Easy.