The phrase translates to "Ready or Not via network/online" in English.
: Teaming up with up to four other players to handle SWAT missions. Gotowy lub nie przez sieć
It likely refers to playing the tactical first-person shooter game in online multiplayer or co-op mode. "Przez sieć" is the standard Polish term for playing a game over the internet with others rather than in local single-player mode. The phrase translates to "Ready or Not via
If you are looking for information regarding this game, it typically involves: Gotowy lub nie przez sieć
: Joining random games or hosting a session for friends.