Glitch

A glitch is a code or user error that causes a problem that can disrupt game-play or site navigation. One of the most common glitches is a "hatplosion" or "hat explosion" which allows players to wear up to three hats. It is now allowed and it's also a feature ROBLOX released in June 2010.

ROBLOX would recommend you to report a glitch or a bug to the moderators so they can fix it.

Abuse of a glitch can result in a permanent ban from ROBLOX if a player causes exploits that is not a glitch or a bug, depending on the severity of the glitch, or how much a player abused it.

Invisible Torso
When some people enter a game on ROBLOX, they find out that sometimes their body is invisible. If the player scrolled in and out of it, it would no longer show up to be invisible. Players can make their torso invisible with using a special program but it does not show up to other players. If a shirt has been deleted, you can wear it but it will show up with an invisible shirt.

Fly Brick (walking and flying)
This is a bug that is used by many builders on ROBLOX. People usually put an unanchored and welded brick on their legs. They would fly while they walked. Some of the moderators have experienced this bug and cannot fix this bug.

Big head
If you wear the "ROBLOX Visor in 2007" or the "Vampire Collar", your head will turn big, if you also wear another visor first.

Fly Tool Glitch
In some places that have the fly tool, some people will float when they jump, or walk off a brick. This can be fixed by reseting, though it may happen again soon. It usually fixes after a while. This is mostly found in places like Dragon Ball Adventures from mastrj, as they use the fly tool.

Freeze Ray Glitch
The freeze ray glitch makes you hold a freeze ray not the way it should be held. This could happen in your profile picture and gameplay.

Login Bug
In the login section of ROBLOX, if a user types in an incorrect password, it will display the text "The username or password you have entered is incorrect." It is not possible that the username is incorrect, otherwise a message will display "let's make a new account!", just above the login section.

Captcha Login Bug
If a user enters this section of the website after too many attempts of a password or user entry, upon retyping the user information upon this page, some displayed text will glitch. If a user types in an incorrect captcha sequence code as well as an incorrect password, both will show. Upon retyping one of these correct (Say, a user types in the correct password but an incorrect captcha code it will still display "The text you have entered does not match with the text above.")

No Delete Button
In June 2010, the delete button was removed. If anyone took something from an item, you could not delete it. You could get as many items you can if you wanted to but it still won't show up the button to delete it. People who have an item before this will show up the delete button. This has been fixed now and players who bought a hat during this issue will now show its delete button.

Hat Giveouts
A user named Nikayah created an exploit which one of the hats such as the Riddling Skull was given out to over 1,000 users. ROBLOX has banned him and was unbanned with another exploit in early 2009.

"Hacker" Player Badge Exploit
The "Hacker" badge is a badge created by a player which was added to his game in 2009. This badge was spread out over 1,000 2006 users in 2010. Users 201 to 2,549 got this badge for free which only was given to 2,348 people who are all from 2005 and 2006.

Small Character Glitch
Around early '09, when you equipped a kantana or a tuba, your character's avatar would be rendered much smaller than normal.

Extreme-load Glitch
This happened on 1-4-2012. As a player tried to log in, their browser would cycle between 3 different sites all with roblox.com in the name. They would never load one of them, because the site would instantly become a new website.

No Torso Glitch
This happened on December 15, 2010. This glitch allowed the players avatar to have no torso. It didn't cause any problems with ROBLOX. Your torso would be there if you joined a game. This was fixed and all players were updated back to normal on the 16th.

Gear Down Glitch
This glitch was only up for a few hours before it got patched. This glitch prevented the player's avatar to move its arm in the proper location while holding a gear.

Double Gear
The double gear glitch allowed users to drop one gear, and select another gear while walking over the dropped gear, which would let them use both gear at the same time.

Lifetime Outrageous Builders Club
This glitch was discovered on YouTube. All the player has to do is order any Outrageous Builders Club membership, select the web address you are on, change the 5 in the end to a 6, then finish doing what you must to order. This only prevents users from having to call the ROBLOX HQ for a Lifetime Outrageous Builders Club.