What is considered the best game in the Apex Legends series?

As of the knowledge cutoff in early 2023, there is only one game released in the Apex Legends series, which is "Apex Legends" itself. Developed by Respawn Entertainment and published by Electronic Arts, it debuted in February 2019. It is a free-to-play battle royale game that has quickly gained a large following due to its fast-paced gameplay, unique character abilities (known as Legends), and intricate world-building. It is set in the same universe as Respawn's Titanfall series. With regular updates, seasonal content, and evolving gameplay mechanics, Apex Legends maintains its status as a highly regarded title within the battle royale genre. As such, Apex Legends stands unchallenged as the best game in its series simply due to the fact that it is currently the sole entry.