Best Sims Yet, if you look on the positive side!!
Glitches:
Yes, they are a few glitches, like when someone randomly cant move. there is a cheat for this to reset the sim (THANK GOD!), but hopefully they will fix with a patch.
Few "skeleton stretch" glitches
(see here: http://llnw.thesims3.com/sims3_asset/sims3_asset/media/676/102/000/00/screenshot_original.jpg).
Also it might randomly crash once in a week, from overheat, or poor graphics card.
Comparative Gameplay:
So whats new? Whats bad?
Well a downside is that you can't actually GO into the buildings (restaurants, movie theater, store, etc.), which has been a problem for creative machinema users.
If you put that aside, however, it's great in the sense your sims can go anywhere and you can SEE there work, as well as run around the neighborhood, NO loading screens whatsoever.
You can make funny, evil, hot or not sims. I love the uniquness.
Once my sim (who is an athletic buff) thought another was hot, they went out, moved in eventually then BROKE UP because of one of her traits. At the last minute!
NEW! Create-A-Style:
There was CAS (Create a sim) and CAH (Create a house), now add Create A style! You can literally color anything any color with the new color wheel for everything! Just takes about 5 min. to get used to it. You can do it for clothes as well. NO need to go and shop for clothes and spend 200 simoleons on ONE outfit! Get it free in style!
So basically, it's a do anything and everything kinda open-gameplay. RPG-ers, maybe, FPS-ers you'll get bored,
RTS-ers, Try it out, Simmers- Addictive!