The Play Button emoji is a solid coloured triangle pointing to the right. You can’t hear or watch anything without hitting this button. Well, you could try, but you’d be staring at a still screen for hours.
The play button emoji was introduced in 1995 and released as part of the Unicode 11.0 standard. This emoji can be found under the symbols
category. Because the play button emoji has been around for quite some time, it should display correctly in the majority of operating systems.