U.S. regulators opened an investigation Wednesday (December 22) into 580,000 Tesla vehicles sold since 2017.
It concerns the electric vehicle maker's decision to allow games to be played on front center touchscreens.
Regulators said it covers Tesla Model 3, S, X, and Y vehicles.
The National Highway Traffic Safety Administration said the functionality - known as "Passenger Play" - could distract drivers and make a crash more likely.
Tesla did not immediately comment.
The agency said they would evaluate the frequency and use scenarios of 'Passenger Play'.
Earlier in December, the same regulators said distracted drivers were to blame for a large number of U.S. road deaths - 3,142 in 2019 alone.
A New York Times article released this month noted that Tesla's latest update added three games, including Solitaire.
The paper added the game feature asks for confirmation that the player is a passenger, though a driver could still play simply by pressing a button.
The NHTSA has already opened a separate safety investigation into 765,000 Tesla vehicles over its autopilot system.
That was after a number of crashes linked to the driver-assistance feature and parked emergency vehicles.