Fundamentally, SimCity has always been a 'software toy'. That means that there's no real end state, no way to win. It's just a thing that you play and experiment with. You build, and tinker, and mess around. It's a toy, not a game; it's a sandbox, not baseball.
So, in this iteration of the game, you don't even get to buy your toy. Rather, you rent a toy from EA, who lets you play with it only in very limited, circumscribed ways, only on their servers. So you have to have a live Internet connection at all times, and their servers have to be up, and have to have space for you. And the rules for play are draconian. If you want to, say, build a city, save it, blow it up with something terrible, and then restore from save, you can't do that anymore. That's an unauthorized usage of their toy. And if you figure out ways of using their toy that they don't like, they'll ban you forever.
All third-party modding is shut out. One of the best parts of SimCity 4 and The Sims is that users can create and share content among themselves for free. You will no longer be able to do this. You will be required to run only Official Authorized Content.
Further, you're not getting the whole game for your $60 or $80, depending on what version you're buying. EA's plan is to sell you Simcity 5 over and over and over. They've directly admitted that they already have it running with larger cities, but they're not releasing that now. They claim it's because it "won't run on Dad's PC", but the real reason is so they can sell it to you again later. Want subways? That's gonna be $20. Want railroads? Another $20. Bigger cities? Oh, that's in the $30 expansion.
Right now, if you look at The Sims 3, the game costs $30. But if also you buy all the DLC for it, it's *four hundred and seventy dollars*. This is what they are doing with SimCity 5; locking you into their server infrastructure, and then exploiting the heck out of your wallet.
This is a lousy deal, and you would be stupid to take it. Always-on DRM, and a deliberately crippled game, so that they can slowly uncripple it, charging you for every restored feature from prior versions.
Simcity 4 still works pretty well. It's not quite as nice as most current games, and can require you to 'pin' the process to just one processor on a multi-core system (ie, most current machines), but if you want a city builder where you won't have to pay extra to breathe both in AND out, that would be a better option.
But buying this game? In my opinion, you would be wiser to take three twenties out of your wallet, and light them on fire.
