If you hear bandwidths of 10 Megabits in, 5 megabits out, and think that that's the service you get in a third world country, this is not for you. This is for people who lust after 10 Megabit connections and can afford one or more consoles. This website shows you how to get creative with online games, and find ones they don't automatically get kicked off of.
How well did the Wii stand on 500k in/100k out?
Well I got a Wii mainly for the primary game Wii Sports as a demo, and thought a lot of cool things could be done with motion controls by Nintendo. There were a few cool games, most of them by Nintnedo, but notable third party games that weren't online were Bit Trip Complete, Dragon's Lair Trilogy, and I got a workout on Active Life games.
Unfortunately, when I went to the Wii U, I couldn't play Active Life on it, and Nintendo STILL hasn't fixed the issue, even with a Game Cube Port adapter in existence, which with a little programming would be the PERFECT solution. But it only works in one case: if NO GAME REQUIRES both the Game Cube port AND the USB port TOGETHER. If it doesn't, then maybe there's an emulator switch mode, where if it sense the Game Cube Ports in the USB ports, it switches to Game Cube Port Mode. This would also work on the newer Wiis. This is true in Active Life and Dance Dance revolution games, but I know one other game that comes real close to requiring a Game Cube controller that isn't a Game Cube game, Metal Slug Anthology. (meaning it's not a strict requirement, but I think it is. Using other controls doesn't seem right with an SNK digital controller. Even the Game Cube controller is messed up requiring the analog thumbstick.) There may be one or 2 obscure titles that require both a Game Cube Controller and a USB port. If there is, let me know. Otherwise this would be the perfect solution to make the Wii U 100% Wii compatible.
About 9 out of 10 third party games I ignored as either cheap shovelware, or games not directed to my type of gaming. There were a few I bought that were good. Most I found in the sale bin. At thrift stores, I padded my collection. But Nintendo for the most part made good games. They were nibbling around the edges when Super Paper Mario was a surprise hit, mainly because it brought back 2d platforming, albeit with role playing elements and a 3D gimmick. Then came Wario Land Shake It, testing the waters to see if 2D platforming was still cool. Then came New Super Mario Bros, and the rest is history. Remember they never really thought retro during the Game Cube where Super Mario was in 3D with Sunshine, Metroid was in 3D, Zelda was in 3D, and when they automatically thought 3 dimensions were automatically better than 2. That may have been the case with Legend of Zelda, where the only 2D Zeldas are intentional retros (A Link between Worlds), and multi-player co-op/compete games (Four Swords, Triforce Heroes) , but with Mario, they are different, yet equally good flavors of Mario. Sort of like regular cards and Triple Topper. Triple Topper will not replace regular cards, even if it succeeds beyond my wildest dreams, but if it succeeds, it will hopefully be thought of as a unique variation of many card games that require my deck. So now Nintendo makes 2D AND 3D of any game that makes sense to make in 2D and 3D, and doesn't automatically poo-pooo the lack of a third dimension as quaint. Even Odyssey will have some "intentionally 2D levels" within the scope of a 3D Mario, and maybe even use a story telling device to adequate explain it to canon-fanboys. Yes those same guys who debate whether something in the chronologival order of The Legend of Zelda is canonical or not. Why can't The Legend of Zelda be the epic quest that is told in many different art styles and play mechanics, each representing the eternal struggle between the young apprentice becoming the hero of legend, and the villain who represents years of doom, and the princess to rescue, even though in later episodes she was just not some damselk in distress, and have each be taken on it's own merits. I don't need to know the story elements of one game to appreciate the other. In fact, Ocarina Master Quest builds off your knowledge of the original Ocarina to fool you, and force you to NOT play by memory, but experience it all again. The only thing recycled is the story.
Game reviews and tests of online Wii games
Network wise the Wii was a young network. There was no voice, hard to ping friends, and only a few friends. Of the 5 games I played, 2 of them were third party. I don't think there were any download games that were online, or the ones that were were either reboots like Bomberman, or I couldn't find ANYONE online to play, like the Alien Crush remake.
Note as of now, the Wii online game servers are closed, so I am only going by memory. And remember, these games are based on 500 k in, 100 k out.