Question 1

What does "game changer" mean?

Accepted Answer

Something that significantly alters the way things are done or perceived.

Question 2

How do you use "game changer" in a sentence?

Accepted Answer

The new smartphone was a game changer in the wearable tech industry.

Question 3

Is "game changer" formal or informal?

Accepted Answer

"game changer" is register-neutral — appropriate in both casual and formal contexts. Common in business, technology, and sports contexts.