1:38 PM PT -- Activision -- publisher of Call of Duty -- tells TMZ Sports it is continuously working to combat racism hateful comments and other harassment on its platform.
"It is saddening and troubling that some use the communications functions in games to espouse hate," the company said Friday.
"We have taken a number of actions to address, including banning thousands of players for racist and hate-oriented names; implementing new technology; and providing even easier ways for players to report offensive behavior."
"We will continue to invest in and deploy additional measures aimed not only at enforcement of our policies, but also prevention and education."
Disgusting moment during a video game sesh for T-Pain this month ... a group of players hurled the n-word and other racist insults at the singer -- and it was all captured on video that's hard to watch.
It went down when the 35-year-old hopped on a Call Of Duty Twitch stream ... when, before a match started, a group of racist scumbags verbally attacked.
In the footage, you can hear players repeatedly call T-Pain the n-word ... and, at one point, some of the players even said to the singer, "F*** Black Lives Matter."
T-Pain was clearly bothered by it all ... he let out a sigh and said, "Jesus Christ."
"I mean, I don't know at this point," he added. "Randoms."
T-Pain shook it all off, though, and stayed in the game ... and tried to make some light of a horrible situation.
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The "Bartender" singer -- who's a HUGE video game nut -- ended up dominating the match, helping his team win 200-152, and then he rubbed some salt in his racist opponents' wounds.
"Ladies and gentlemen, looks like the n******s win," T-Pain said after letting out a long dance. "Stupid idiots!"
He later added, "Looks like the n*****s took it home. F***ed up. Stupid idiots. F***ing a**holes."
We've reached out to reps for Call of Duty for comment, but so far, no word back yet.