Tilted - What does tilted mean in online gaming?

Tilted is slang for "Aggravated." See an example of how people use it.
A player who is tilted is angry and, as a result, making game mistakes. These days, poker players most commonly use the term tilted, to describe players who are playing sloppily because they're salty about previous losses. However, tilted originated among pinball players.

League of Legends: How to Know When You Are Tilted and How to Untilt

Kirby Tilt 'n' Tumble - WiKirby: it's a wiki, about Kirby!

Tilted towers : r/FortNiteBR

What is OP, Tilt, and BM in gaming?

Top Public Poker Tilts of All Time - Borgata Online

Rational Goes Legit in Greece: Greek Players on PokerStars and Full Tilt Face 15% Daily Profits Tax

Sackboy: A Big Adventure Motor Accessibility – GameAccess

Tilted Nation TNFIRE is extended Gaming Mouse Pad with RGB & 7 COLOR CYCLES. The RGB mouse pad xl switch gives you the options to either switch off or

Tilted Nation Extended Large Non-Slip Gaming Mouse Pad

Define Tilted Gaming – Causes and How to Avoid Tilt!