Software-only fantasy consoles are an interesting concept, covered by a sister comment. There are also hardware-based efforts, like BoxLambda[0], Agon[1], MEGA

Software-only fantasy consoles are an interesting concept, covered by a sister comment. There are also hardware-based efforts, like BoxLambda[0], Agon[1], MEGA65[2], Uzebox[3], F256[4]. 0. https://epsilon537.github.io/boxlambda/ https://epsilon537.github.io/boxlambda/ 1. https://www.thebyteattic.com/p/agon.html https://www.thebyteattic.com/p/agon.html 2. https://mega65.org/ https://mega65.org/ 3. https://uzebox.org/ https://uzebox.org/ 4. https://wildbitscomputing.com/ https://wildbitscomputing.com/