Jeremy then saw the racial slur repeated next to a swear word twice – and turned the computer off after taking a picture.
“It’s terrible,” Mr Martin said.
“Something similar happened to this when he was nine and I actually complained to Roblox and got rubbish emails back.
“It was another game where you are a DJ and you can shoot the music.
“A song came on and this kid started saying the same stuff, using the n-word. It was coming through the speakers.
“We pay £20 a month for a subscription so you can buy things on each game.
“That’s his pocket money, basically. But come Christmas and birthdays sometimes we spend £200 or £300 on him as that’s all he wants.
“He doesn’t want toys, he wants things he can use in the games.”
The golf caddie, who is still close to Bruce’s widow Wilnelia, said he didn’t see the point in complaining again as he didn’t believe the company would do anything.
“I didn’t see the point in complaining this time,” he said.
“I got so cross the first time and this was just as bad and they just fobbed me off with emails.
“I want to make people aware as they let their young kids play Roblox and don’t watch what they’re doing.
“They will be seeing these things and their parents won’t know about it and it’s supposed to be an innocent platform.
“Carrick didn’t understand what it meant. Now we have to police it ourselves, which is annoying as we can’t give him the freedom he wants.
“I don’t have much confidence in it.
“There will be thousands of children who have to read and listen to this stuff all the time.”
Roblox has been widely criticised recently for allowing games that feature characters simulating sex, strippers and even Nazis.
Some games featured a naked man wearing just a dog collar and a lead, a man in a Nazi uniform, and a group watching a couple having sex.
Avatars are able to communicate with each other through dialogue boxes, meaning adults with ill-intent could speak in an inappropriate way with children on the platform.
But the owners say they are doing all they can to combat the issue.
They claim to use a combination of human and machine detection to conduct safety reviews of every piece of content published, including all images, video, and audio files.
A spokesman said: “We have a safety-first culture at Roblox and work tirelessly to maintain a platform that is safe, civil and welcoming for all.
“That includes zero-tolerance for behaviour that doesn’t meet our Community Standards and a robust set of safety features specifically aimed at protecting younger members of the Roblox community.
“We have rigorous, industry-leading chat filters that block inappropriate words or phrases – with even stricter filters automatically applied to children under the age of 13 – and we ensure certain features, such as voice chat, are only available to verified users above a certain age.
“We also empower and encourage parents to determine what is appropriate for their children by providing a suite of Parental Control settings that can be used to restrict who children can interact with (including the option to turn off chat), what experiences they can access, and how much they can spend.
“And we provide parents with dedicated tips and advice on our For Parents pages to help them manage their childrens’ accounts.”
In 2020, Roblox told Bloomberg that two thirds of all US children between nine and 12 are on the platform.