While five isn't a huge number, the quality of these maps is more than enough to make up for it. Here are all the returning maps in Mario Party Superstars.
Mario Party Superstars' Biggest Miss Is No Unlockable Characters & Maps
Mario Party Superstars - [DLC Wave 1] 3x New Maps Showcase
Mario Party Superstars review: A party for the ages - Polygon
Review] Mario Party Superstars — one party you won't want to miss
Mario Party Superstars Custom Board (Pokeball Mario Party Custom Board by ZXMany)
What is the Mario Party Superstars boards list? - GameRevolution
Partying It Up With Mario Party Superstars - Mom and More
Mario Party Superstars, Page 2
Mario Party™ Superstars for the Nintendo Switch™ — Official Site
RANKING MARIO PARTY SUPERSTARS MAPS
All Boards (Maps) - Mario Party Superstars Guide - IGN
Mario Party Superstars: Guide To Every Item
Mario Party Superstars review – we like to party, we like to Mario Party
Mario Party Superstars Maps Guide - Every Map in Mario Party Superstars
Side by side comparison between Mario Party Superstars' boards & their N64 counterparts : r/n64