Big Tree

Bot Zombie Mod

Big Tree

Metro

Farero

Dust EX

Italy EX

Assault EX

Big Tree (bzm_bigtree) is the first Bot Zombie Mod map in Counter-Strike Online.

Overview

Big Tree is the first map that supports the Zombie Bot game mode. It promotes to basic Zombie: The Original system with the addition of bots. Bot navigation has been tweaked a bit so that it is compatible with Zombie modes. These modifications to bots are:

New function: zombie safe area.
No attack delay to all bots.
If one teammate is infected in a camping area, other human bots will rush to another safe area. There are two safe areas for bots in this map.

Release dates

This map was released alongside M32 MGL on:

South Korea: 28 June 2012 with Z-VIRUS patch.
Taiwan/Hong Kong: 4 July 2012 with Z-VIRUS patch.
China/Japan: 4 July 2012 with Z-VIRUS patch.
Indonesia: 10 April 2013.

This map was released alongside SKULL-1 on:

Singapore/Malaysia: 27 March 2013.

This map was released alongside MG3 on:

Turkey: 4 June 2013 alongside Zombie: The Original.

This map was released alongside Open Beta Test on:

CSN:Z: 23 September 2014.
Vietnam: 26 March 2015.

Achievements

Special mission

Appointer	Task	Reward
	Kill 30 zombie bots in one day period.	Random cash weapons for 3 days or Level 2 Experience coupon.

Honor mission

Title	Description	Task
[Bot Zombie Master]	Gentleman, you shouldn't belittle on them just because they are dead. Don't forget they are zombies.	Unlock Difficulty Level, 'Elite', in Bot Zombie Mod.

Gallery

CS Online Balrog-VII or bigtree(古嶺神樹)-Zombie BOT(Taiwan Version)

CS Online - ZM with bots(BigTree)

Counter-Strike Online Bot Zombie - Big Tree Gameplay

Trivia

In the tunnel there are rats and bats; the bats will fly out once any player enters it. Near the big tree, there are also a few rats which can't be interacted with.
The rats model is taken from a cut model in Half-Life, while the bats model are taken from Banshee's Pulling ability.
This map is used as a tutorial map for Zombie mode.