You are very close to truth. Before, many games implemented using chips, but not all chips was logic, some things was analog.
Even in consoles/arcades, loong later appear some hybrid things. For example, I hear about one arcade which was based on z80, but have analog sprite scale unit.
I think, nearly completely digital world become only after appeared Nvidia TNT, which was cheap enough and produced in huge numbers.
But to be honest, I don't have enough info about hardware used in Nokia NGage and other portables, so I could assume, even later hardware could have analog parts.
Even in consoles/arcades, loong later appear some hybrid things. For example, I hear about one arcade which was based on z80, but have analog sprite scale unit.
I think, nearly completely digital world become only after appeared Nvidia TNT, which was cheap enough and produced in huge numbers.
But to be honest, I don't have enough info about hardware used in Nokia NGage and other portables, so I could assume, even later hardware could have analog parts.