PlayStation 5 will be able to play "almost all" of the top 100 PS4 games - as ranked by total playtime - at launch.

PS5 Specs Reveal Presentation 10 IMAGES

Announced by system architect Mark Cerny in a livestream today, testing of games has to be performed title-by-title because the boost PS5 provides can be simply too powerful for older code, but results have apparently been "excellent".The solution has been to allow the new PS5 chipset to switch to "legacy modes" for PS4 and PS4 Pro. It's not clear yet what those 100 games are, nor which ones haven't been able to make the jump yet. It's also not clear how many PS4 games outside of that top 100 will be available.As for when we'll see the rest, a PlayStation blog post reads: "With more than 4000 games published on PS4, we will continue the testing process and expand backwards compatibility coverage over time."You can check out everything we learned in today's lengthy livestream , and then read over the full specs for the PS5 , and then see why its install times won't be as long as PS4 , and finally check out all the PS5 games that have been announced so far.