Rather enjoyable
I've wondered why I hadn't seen a flash game based on the Sim Tower mechanics, but not I have. It's rather enjoyable game, I spent a few hours on it.
The music was catchy, although the night theme got a little annoying. I kept hearing lyrics in my head after awhile. "I'd hate to build a mall, only to have it fall. I'd hate to build a mall, only then to have it go-o and fall." Drove me crazy.
At some points, the game relies on 'false difficulty', with many of the missions having goals that are completely arbitrary. I sometimes found myself adding new floors that were almost empty just to meet the quota, or fast forwarding through a day to meet a goal I far exceeded the previous day, or randomly clicking on shops to upgrade. In terms of drawing out the game length, it worked, but the same thing could have been achieved with more content, like even more expensive shops, or more logistical problems to solve. I understand this stuff's not always practical though.
Another minor problem is some of the information wasn't well organized. It would be nice if we could click on a shop and gain some indication of its popularity so we know if it needs to be upgraded. When a celebrity visits, we should be able to jump to their location if we want instead of having to search through dozens of sprites.
The idea for this game was very good. It had a simple but addicting gameplay mechanic, and a strangly charming aesthetic to it. No complaints about the art, the story was good enough for this kind of game, the gameplay is addicting and relatively original. I enjoy games like this, and hope to see more in the future.