GArena does not have World of Warcraft on it, and yes, it's a "private server," you need to fully comprehend the definition of a private server, so please comprehend this, any server that's not hosted by an officially deemed affiliate is a private server, anything not hosted by the creators themselves, is simply a private server... GArena is a large private server that has a huge list of games offered to play.
If you would like to see some of the main hacks for private servers, I can give you one of the number one hacks for it. I'm firstly going to provide information regarding a new hack coming out soon, it's an add-on hack; some features will work on retail version of wow as well.
Here's a list of details that this hack will be able to do -- not my list, so I do not feel like editing the horrific grammar contained within it.
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===Stuff menu===
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[Stuff Menu: 90% finished]
#Reset talents [Update 30.09.08] function added
#Leave Battleground (without defuff on retail)
#Change PvP Titel [Update 30.09.08] function added
#Change Names (cliendside and just for screenshots)
-Change Player Name
-Change Target Name
-Change name on Character Window
-change group member's names [Update 26.09.08]added function [Update 01.10.08] function changed in "hide party members". is working now
#Macro Timer
#Item spoof (from citykid)
#Spam multipe duel flags
#L70ETC
#Freeze
-Freez tatally/unfreez
-Freez for X seconds
#Buy unlimited
#RecoundModDMGHack (works fine/just with english client)
#Crash own Client
#Show/Hide move speed
#Anti-afk [Update 07.10.08]
#Hide toon's name from others [Update 30.09.08] function added
#Show/hide warnings if you are to fast (speed hack) (And yes my hacking addon can detect speedhack. each speedhack! xD)
#Flyhack detection [Update 28.09.08] REMOVED - Not possible weh doesnt change anything the i could detect with the UI
#walk while stunned,rooted ect... [Update 30.09.08] function added credits to: Qerawzzer
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===Retro menu==
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[Retro Menu: 100% finished]
#Crash server [Update 28.09.08] function added
#Crash anyones client
#instant logout [Update 28.09.08] function added
#read GM tickets
#Kill own faktion [Update 28.09.08] function added
#fixed colorme stuff
#rezz yourself [Update 28.09.08] function added
#invisibility [Update 30.09.08] function added
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===Chat menu==
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[Chat Menu: 60% finished]
#Auto Spammer
#Color chat
#Color Chat (on retail xD) [Update 01.10.08] I will move this in retro section cuz its fixed in wotlk (perhaps i wont even put it in retro section cuz its just one of the worstest ways to color your chat...
#Cross-faktion conversation
#Color guild note
#Color guild message of the day
#Spam Symbols/Icons in chat
#Fake screenshot (chat messages)
#Link Items by ID (also Gm items, also on retail) [Update 26.09.08] function added
#Link spells by ID (also Gm spells, also on retail) [Update 26.09.08] function added
#Link quest by ID [Update 28.09.08] function added
#create item with random stats [Update 28.09.08] having problems with randomness [Update 07.10.08]Function now working
#Show/hide current chat color
#Logging chat [Update 30.09.08] function added
#logging combatlog [Update 30.09.08] function added
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==Graphics menu=
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[Graphics Menu: 100% finished]
#Show current fps
#groundEffectDensity
#groundEffectDist
#detailDoodadAlpha
#horizonfarclip
#farclip
#characterAmbient
#smallcull
#skycloudlod
##Note: Ill add more graphic commands if i can find more##
#Reload ui [Update 28.09.08]
#Restart GX [Update 28.09.08]
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I do not know when this hack will come out, but when it does I'll be sure to put on here if anyone actually uses WoW p-servs.
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Here's a currently working WoW Emu/P-Server working hack though for the meantime.
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WoWEmuHacker 5.0 Final release
In this version the current features that are working are.
Goto Location. (depends on your server of course)
Goto Spirit Healer. (Same as above)
Goto Corpse. (same as above)
SpeedHacking. (same as above)
Trackings.
Wall Climb.
No Fall Damage.
Teleport to Plane.
FlyMode.
Walk on Water.
Hyper Mode
P2p Teleport. (Use Hotkeys)
Allow Model Hacks.
Gravity Control.
Change Model Size. (Only effects local client, as in no one else can see the affect.)
No Clip (HotKey Controlled)
Increase XYZ (HotKey Controlled)
Decrease XYZ (HotKey Controlled.)
Air Jump
Faction
This version supports the following WoW Clients. 2.4.3, 2.4.2, 2.4.0 These clients are detected through an MD5 hash check run when the target process is selected. If you have modded your WoW.exe the MD5 will fail and you will not be able to use WEH with it.
Run down on the buttons.
Teleport List.
Add Location. Used to add a location quickly to your Teleport List, It can be edited later.
Launch WoW.
Spirit Healer. When dead teleports you to the spirit healers XYZ.
Goto Corpse. When dead teleports you to your corpses XYZ.
HotKeys. Brings up the Hotkey Dialog Box. Note* To remove a hotkey select the hotkey you want hit backspace so it says None then hit set.
Client Info. Displays the Pid, Client Version, MD5, Client Path, of the open process.
Save Settings. Saves your currently selected options in the windows registry.
About. Brings up the about box.
Selecting a Client:
If you have started WEH5 before starting wow you can select your client by going to the Process ID Drop List and selecting the PID of the client, this allows you to select from multiple versions of WoW.exe that might be open and using the Client Info button, you can confirm if it's the correct one you have selected, by default WEH5 will open the first WoW.exe that it detects. If you have more then 1 wow open you can still switch to another client from the drop box.
Note* Warning: AVG can block the program. The fix to this is to add WEH5 to the allow list of programs in AVG or to Disable AVG while using WEH5.
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Download--
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These are not my hacks, and if you would like the website that this hack belongs to you can either look at the download link or pm me; I'm simply trying to not advertise other forums.
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My bad, I thought this section was for only World of Warcraft, not all Warcraft games, and they do have Warcraft and Starcraft. So I'm sorry, no idea about WarCraft.