unplayable

adjective
1
not able to be played; impossible to play on or with
بازی‌ناپذیر, غیرقابل‌بازی
compare playable
2
(of a sportsperson or team) playing so well that it is impossible to beat them
شکست‌ناپذیر, بی‌رقیب
When they're good, they're unplayable.