Tilting

[Britney]

The process by which blister steel is rendered ductile by
being forged with a tilt hammer.

[Sonia]

When you make [a mistake] and then become so [frustrated] that you [continue] to make more mistakes.

[Greta]

When your so pissed off from losing multiple amount of games that [you play] worse and worse till your so pissed you begin [leaning] over your keyboard screaming over every little mistake you make and complaining about gaming imbalances
(Common in [Starcraft II])

[Tariq Zaki]

present participle of tilt