A "nostalgic nod" refers to a gesture or expression that shows fondness or recognition of something from the past, evoking feelings of nostalgia. Full definition
This mode screws up the aspect ratio of the game in exactly the same way split - screen multiplayer did in Sonic 2, which is either a fun nostalgic nod or a strange annoyance depending on how fondly you look back at the quirks of a game from 25 years ago. (gamecrate.com)
In truth, Odyssey's entire soundtrack is a symphonic serenade of nostalgic nods and memorable melodies begging to be blasted up to eleven. (nintendowire.com)
Shovel Knight The ultimate ode to 8 - bit platformers, with more nostalgic nods than you can shake a heavily pixellated stick at. (tiredoldhack.com)