After months of rigorous testing, this year’s most popular game has officially been released.

Today’s launch of PlayerUnknown’s Battlegrounds concludes a whirlwind year for developer Bluehole, which released the battle royale game on Steam Early Access back in March. Since then, the game has gone on to sell over 20 million copies and shatter concurrent player records.

For longtime PUBG players, version 1.0 promises to introduce a more optimized experience. The lack of polish has easily been the biggest criticism against the game since hitting Early Access, so it will be very interesting to see how it holds up.

The release also introduces a new desert map called Miramar, along with new weapons, vehicles, and a vaulting system. Additionally, Battlegrounds 1.0 will also include a replay feature, which will allow players to replay their game from different angles to see how the entire match unfolded.

Needless to say, today’s launch is a pretty big deal. Given the problems the game has encountered over the last several months, I’d expect today’s launch to be anything but smooth. In any case, Battlegrounds 1.0 will start rolling out at 2 a.m. EST today.