There is no built-in storage space
You must have a device called a memory card.
It was possible to save
That thing was bigger than I thought.
Dreamcast
(It was released before PS2
Active since PS1)
Simple terminal functions on the memory card
Equipped with peripheral devices
Accordingly, Sony
Of course
You can enjoy exclusive mini games
It’s something of a ancestor of the PSP.
and
The good guys went through this and eventually created Doom.