It comes with special emulates (Nintendo official) which allows for playing classic NES and SNES games, you gain access to online multiplayer, game trials which are games that Nintendo gives out for a limited time period (The game is playable for a certain amount of time, which comes with the full version. It lets you try out a game for a little while and then if it's good, you can buh it and have the save progress transfer to the paid copy.) and even a app that let's you do stuff like access in-game services, do voice chat and more, as well as park of a recent update to the service, you get a currency called platinum points, which are earned by doing certain "missions" such as playing a featured title, or playing any Switch Online supported game. They can then be spent on icon elements which allow you to make custom icons, or "profile pictures" for your user. There's also a more expensive version of the subscription service called "Nintendo Switch Online + Expansion pack" which where I live, it's twice the price of the base subscription., but it includes two more emulators, which are for N64 and Sega Genesisas well as free DLC for certain games from Mario Kart, and Animal Crossing. The base subscription can be bought in subscription intervals of 1 month, 3 months, and 1 year, and the Expansion pack can be bought in 1 year subscription intervals. I will tell you that if you do have a PS4/5 or Xbox One/Series X/S, the subscription prices for the Switch is cheaper than the two other consoles, in terms of the separate intervals. In comparison, where I live, it's $24.99 for one year of the base subscription, $49.99 for the Expansion pack, compared to $69.99 for one year of PlayStation Plus Essential (the lowest, cheaper tier of Playstation's "PlayStation PLUS", their subscription, and $59.99 for six months for Xbox Live Gold, which is Xbox's version of PlayStation Plus and Switch Online (including the optional Expansion Pack). That doubles to 119.99 for 12 months.) Oh and by the way, these emulators do include the option for 2 player play. (Well, most of them anyways, haven't tried myself since I own a Switch Lite, which is the cheapest version but is specifically designed for single player, handheld use) This would be really great value since they include about 25-30 games per emulator and more to come along. Overall I think it's good to at least consider since they would provide hours upon hours of play for a really good price per year There's a really broad variety of genres that come with them plus the other perks I mentioned. Best of yet, the Nintendo Switch Online subscription comes with a special app on the switch itself, which doesn't require a active subscription to access, for the most part. This can be used to access some perks that I mentioned, such as custom icon creation, and managing your suoscription.

Just a piece of advice that I think you should know it: There's an app on most phones called "Nintendo Switch Parental Controls" elwhich provides more controls than the Switch initially comes with, such as being able to set timers or even how long they get to play on a certain day of the week, see what they have played through out the week, and even what happens when time is up (Two options, either a simple notification which appears on the top left of the screen or to interrupt and suspend gameplay entirely, which the latter is usually for last resort cases where they will not get off on their own) I'll provide a link to the video on YouTube that explains this into more detail

https://m.youtube.com/watch?v=03bAayBtcb0

Oh. I almost forgot, yes, the games are really good.