1. What is Base Builder?

Base Builder is a game mode for Counter-Strike which consists in builders (CTs) using objects of a map to build bases against zombies (TRs).
Originally made by Tirant, this game mode gained a lot of popularity due to the endless possibilities the builders have to build unique bases.
In the author's own words: "Because every user is different and will like to build their own different styles of bases, every round is different. It is nearly impossible to recreate exact bases (unless the user has practiced significantly), so playing one map won't get too old too quickly."

2. How do I play this?

Base Builder is divided into 3 phases: the build phase, the preparation phase and the defend phase.
During the build phase, the builders must build their own bases by looking at an object and holding down their "+use" key (E by default). The object will turn into a pure color and transparent. While the builder is holding down their "+use" key, they can move it by looking at where they want it to go.
Additionally, the builder can use their "+attack" key (Mouse Left Click by default) and their "+attack2" key (Mouse Right Click by default) to push or pull the object respectively. When the builder is satisfied with the object's location, they can release their "+use" key and it will become a solid object.
Moreover, the builder can use their "+reload" key (R by default) to rotate the object by 90 degrees while grabbing the object.
Furthermore, the builder can use their spray key (T by default) to lock/unlock the object (up to 15 locked objects), regardless of whether or not they're grabbing the object, which will turn the object into a pure color and transparent, making it unmovable for other builders (with exceptions).
Also, the builder can use their flashlight key (F by default) to copy the object (up to 5 copies), regardless of whether or not they're grabbing the object, except if the object is locked by another builder (with exceptions).
Finally, the builder can use their "+alt1" key (no default) to use a hook for faster locomotion.
After the build phase is over, the preparation phase will begin and builders will be respawned to test their bases before the zombies are released. In this phase, builders are no longer able to build and may use their "buy" key (B by default) to open a menu to buy weapons. Upon buying their weapons, builders receive an HE grenade.
After the preparation phase is over, the defend phase will begin and the barrier keeping the zombies confined will be removed, allowing them to start attacking the builders. In this phase, builders who die will respawn as a zombie and zombies respawn upon death until the round is over.
If the round time expires, the builders win the round. If the zombies kill all builders before the round time expires, the zombies win the round.

3. Money

Players can earn money by killing zombies, killing humans, dying as a zombie and spending time on the server. Below are the values of each reward:

-> Kill a zombie: $4 ($6 for VIPs)
-> Kill a human: $10 ($15 for VIPs)
-> Die as a zombie: $2 ($3 for VIPs)
-> Spend 10 minutes on the server: $5 ($10 for VIPs)

4. Weapons

Players own by default a SG-552 and an USP. However, they may acquire more weapons with money in the weapons acquire menu.

5. Upgrades

Players may upgrade various attributes for both human and zombie. Below are the attributes that can be upgraded:

-> Human:
  -> Health
  -> Armor
  -> Speed
  -> Recoil
  -> Ammo
  -> Damage
  -> Reload Time

-> Zombie:
  -> Health
  -> Armor
  -> Speed
  -> Gravity
  -> Knockback
  -> Stun
  -> Visibility

6. Clans

Players may create a clan by spending a fee of $500. Once created, the owner may invite up to 5 more players to the clan (maximum of 6 members per clan).
Clan members can move/rotate/unlock/copy other members' locked objects.
Clan members can earn money for the clan by killing zombies, killing humans, dying as a zombie and spending time on the server. Below are the values of each reward:

-> Kill a zombie: $2 ($3 for VIPs)
-> Kill a human: $5 ($8 for VIPs)
-> Die as a zombie: $1 ($2 for VIPs)
-> Spend 10 minutes on the server: $2 ($4 for VIPs)

The clan's owner can upgrade various attributes for both human and zombie which benefit all clan members. Below are the attributes that can be upgraded:

-> Human:
  -> Health
  -> Armor
  -> Damage
  -> Reload Time

-> Zombie:
  -> Health
  -> Speed
  -> Stun
  -> Visibility

Only the clan's owner can:
-> Transfer ownership
-> Buy clan upgrades
-> Invite players
-> Kick members
-> Disband the clan

7. Party

Players may create a party with another player. Once created, the two players can move/rotate/unlock/copy each other's locked objects.

8. Useful commands

-> +use (E by default) to move objects
-> +attack (Mouse Left Click by default) to push objects
-> +attack2 (Mouse Right Click by default) to pull objects
-> +reload (R by default) to rotate objects (only while grabbing an object)
-> impulse 201, aka spray (T by default) to lock/unlock objects
-> impulse 100, aka flashlight (F by default) to copy objects
-> +alt1 (no default) to use a hook for faster locomotion
-> buy (B by default) to open the buy menu (only available after build phase)
-> /menu or chooseteam (M by default) to open the main menu
-> /unstuck or /stuck to unstuck yourself
-> /rank to view your rank in the server
-> /top or /top15 to view the top 15 players in the server
-> /weapons or /guns to open the weapons acquire menu
-> /respawn or /revive to respawn (only available before the defend phase and only to builders)
-> /upgrades to open the upgrades menu
-> /clan to open the clan menu (if you're not in a clan, it's the command to create one)
-> /clanaccept to accept a clan invite
-> /clandecline to decline a clan invite
-> /checkupgrades to print your current upgrades in chat
-> /clanupgrades to print your clan's current upgrades in chat
-> /party to open the party create menu
-> /partyleave to leave your party
-> /partyaccept to accept a party invite
-> /partydecline to decline a party invite
-> /rules to view the rules
-> /help to view this page