[Artlav]

> video game consoles

Huh? I used to make DIY games as late as early 00s, for GBA, Sega Dreamcast and PS1.

Is that no longer possible with modern consoles?

[rnotaro]

For Microsoft you can't do it with the Xbox 360.

All Xbox One can acts as a DevKit but you will need to pay a 20USD ont-time fee to get a developper account that will allow you to use their SDK and various tools.