What you need to play Hey Robot is a smart speaker that can answer general information questions. We’ve tested the game extensively with Alexa and Google Home and both systems work great.
Some devices call themselves “smart speakers” but are really more focused on performing tasks like turning lights on and off, interfacing with your calendar and email, giving you sports scores, etc. For example, Apple’s HomePod can answer some questions, but isn’t really capable of answering general information questions. We don’t know how systems like this might evolve in the future but for now, we don’t recommend them for playing Hey Robot.