thumbstick

thumb +‎ stick

thumbstick (plural thumbsticks)

1. (video games) A small joystick, generally part of a larger game controller, that can be operated with the thumb.
   • 2023 May 25, Nic Reuben, “The Lord of the Rings: Gollum review”, in The Guardian‎:

     Occasionally, when playing any given PC port, you’ll experience disorienting frame drops when using a mouse to control a camera that clearly was designed to move only as fluidly as console thumbsticks would allow.

• analog stick