Here is an overview of the game, via its Steam page:

About

Race your way to victory on bikes, ATVs and UTVs in MX vs. ATV Legends! Featuring massive new open environments, plus a career mode that lets you experience all the risks and rewards of becoming a world-famous professional rider.

Become an off-road racing legend in your own right!

Your time is now!

Key Features

• Race in two-player split-screen and 16-player online mode with squad-based gameplay.
• Compete in the new career mode, where your choices lead to different paths, sponsorship opportunities and special invitational events.
• Experience the brand new Trails mode for high-intensity outdoor racing, with new surprises around every turn, challenging your riding style in new ways.
• Customize your rider and vehicles with the latest parts and gear from the leading manufacturers in off-road racing.
• Ride berms and ruts with higher precision than ever before with the refined physics system.

Watch a new trailer below.