Hey you even got DOOM in there! :D Impressive recreation of all those old classics, and I think there's only one I didn't recognize (the one with the platforms and the lone creature with the big jaw opening?). The animation's great, so much detail in certain scenes too, though the music, albeit pompous, doesn't really seem to fit. It also just fades in and out a bit plainly, no intro or outro or hint that it might be over soon... and most of all: the name. It doesn't seem to do this justice! I guess CDN might stand for something else than Content Delivery Network, but misleading acronym set aside the main thing's a bit generic. How about something like Retro Games Showcase? Nostalgia Games? Something that really speaks about what it is, and the request in the description.
Phew, long comment... but I feel like this has potential to really stand out more! The animation's great otherwise, just some presentational aspects that are lacking. Keep it going!