Bus

The **Bus** is a medium transport vehicle driven by Bill.
During missions, selected units will come out of it (with a 1 second interval between each unit, unless it's a double unit like Agents or it spawned via a Team Power) to attack zombies and protect it from being destroyed. There is a top hatch near the front, where Bill comes out of with a rifle to shoot enemies that get too close to the vehicle. If the bus takes damage, its engine begins to burn and upon losing all of its health it simply withdraws from the area. It can only be healed via Welder (5% on spawn) or the Mechanic Team's 2/2 ability (5% each time a new Mechanic unit is spawned).

Once the barricade is destroyed, the bus will drive forward and run over any enemy units or support units left behind (such as Red Barrel and Turret), dealing lethal melee damage (~9999) to them. This attack bypasses shield points granted by other enemies, such as Medic. While rare, a handful of zombies, such as Twins and Policeman, might be able to survive it at high levels.

It has different attachment slots for stylistic modifications. These consist of paints, wheels, a bus step, horizontal and vertical exhaust pipes, and window attachments. Bus paints and wheels are purely cosmetic items while the rest grants additional durability to the bus.

The bus has Red Barrels, item boxes fastened with rope, and coin safes stored on top. The number of objects on top of the bus reflects the amount of fuel, upgrade items and coins respectively, that the player currently has. These are only cosmetic and do not improve the bus in any way.

## Level Upgrades

The bus can be upgraded with coins. Doing so is essential for progressing in the game.

Each level upgrade increases the bus' health and Bill's rifle damage. Every few upgrades will also grant an extra slot for additional attachments. Unit level cap is equal to the level of the bus. To further upgrade and improve units, players must upgrade the bus too.

### Durability

 The bus' health is referred to as **durability**, which functions identically to health.

The maximum durability the bus can have is 244, achieved by upgrading it up to level 13, and equipping bus parts in every available slot. Without attachments, the bus' maximum durability is **220**.

### Damage

 **Damage** on the bus' page indicates the strength of Bill's rifle.

### Slots

 **Slots** are used to display how much extra attachments the bus can have, and to indicate whenever the bus will get an extra slot with an upgrade.

The starting number of available slots is **5**, and the maximum amount is **13**. All extra slots are for window attachments.

*See level data for more detailed information on bus upgrades.*

## Bus Parts

Bus parts are attachments that can increase the bus' durability while some others are purely cosmetic.

### Paint

Cosmetic attachment. All non-exclusive paints are occasionally available for purchase at Trader. Once all paints are obtained, they will no longer be available for purchase.

Yellow (Default)BlueDeep BlueGrayOliveRedMilitaryRusty RedRusty Yellow
#### Exclusive

Black (Starter Pack)Circus (Circus Pack)Desert (Specops Pack)Heist (Heist Pack)Halloween (Halloween Event)Christmas (Christmas Event - Legacy)Christmas 2019 (Christmas Event)Chicken (Halloween Event)
### Wheels

Cosmetic attachment.

Black (Default)BrushedBrightYellowSportyWhite
### Bus Step

Gives 2 extra points of durability to the bus. There is only one available.

Metal steps
### Vertical Exhaust Pipe

Gives 2 extra points of durability to the bus.

Exhaust Pipe 1Exhaust Pipe 2
### Horizontal Exhaust Pipe

Gives 2 extra points of durability to the bus.

Exhaust Pipe 1Exhaust Pipe 2Exhaust Pipe 3Exhaust Pipe 4
### Windows

Gives 2 extra points of durability to the bus per attachment slot. As mentioned, extra slots for window attachments can be made available by upgrading the bus level a few levels.

MeshWeldedIron plateShield
## Trivia

* The Bus appears to be based on an International Harvester S-Series bus, possibly a converted school bus, as seen with its default paint job.
* Mission 142 is the only instance where the bus does not advance upon completion due to Cephalopods getting in the way. Rather, Bill just exits the vehicle and comments.
* Considering that durability is technically the same thing as health, the bus can have the highest amount of health among all entities related to the player.
* The bus is interactive – while in the upgrade menu, players can tap the bus to shake it, much like the interactive vehicles in missions. Tapping it enough times quickly will cause the bus to rock side to side a little bit. If a vertical, horizontal, or both exhaust pipes have been attached to the bus, exhaust fumes will be released. The side doors will also open when tapped.
* The Christmas (Legacy)/Xmas bus skin is unobtainable after the release of Christmas 2019 bus skin.
* Although the bus' body type remains consistent within most skins, it is inevitably altered in the rest.
* In the past, unequipped attachments except paints can be sold to Trader.
* With the new update in play, bus skins are purchasable with coins instead of the crates as they were scrapped in a previous update. This does not apply with the exclusive paints.