The best multiplayer game on Switch, and the richest, strongest entry in the Smash series, at least in terms of sheer content. Super Smash Bros. Ultimate should prove to be a near endlessly entertaining go-to for friends who want a fun, enduring party game.
Super Mario Maker provides endless fun, heavy doses of nostalgia, and a superb level creator that makes it easy to play the role of amateur game designer. A must have for any Wii U owner who is even mildly interested in Mario games and/or likes to create.
You could theoretically play Xenoblade Chronicles 2 for months and not only find more things to do, but likely still enjoy doing them. It's a robust, well-crafted, and enjoyably addictive ride that JRPG fans, and even some WRPG diehards, should enjoy.
Aegis Defenders is an indie that has a chance to be a standout of 2018. Most of the key ingredients to a winning formula are here; engaging and addictive gameplay on both the solo and multiplayer fronts, a nice presentation, and just the right amount of innovation.
SteamWorld Dig 2 feels a bit like the beginner's guide to sandbox games with its relative simplicity, but it maintains a sense of grandiosity and proves nonetheless entertaining with its Metroidvania-style adventuring and its marriage of both linear and nonlinear gameplay elements.
New Horizons draws from familiar Animal Crossing elements while building upon and redecorating them with its fun island motif. It's still fairly minimalistic, but I liken it to a warm honey tea - it may be simple and subdued, but still provides a relaxing, enjoyable experience.