I want to bring everyone's attention to two modifications that will affect ALL challenges next year. The first is your choice of world/neighborhood for a given challenge. Allowed worlds are Sunset Valley and any expansion pack world, and of course Riverview and Union Cove. But, worlds that you have to pay for are out...
All challenges begin in a fresh, virgin, completely unaltered town.
Unless the individual rule set states otherwise, you are free to create your challenge file in Sunset Valley or any neighborhood that came with an official expansion. The forum's own Union Cove and EA's Riverview are also ok to use for challenges. No other worlds are allowed. You play the entirety of a challenge in one neighborhood and do not move to another one. You may only use the Edit Town screen before you enter Live mode and start to play your Sim(s) for the first time. You may only use the Edit Town screen for the following reasons:
• To add missing Book Corrals or Penningway Bookshelf to a town library. You cannot alter anything else in the library;
• To add missing lots such as Fire Stations, Salons, Laundromats, Consignment Stores, Bars, Subways, Studios, etc. to your neighborhood. Those added lots must either be designed by EA or must be unique to the forum's Union Cove world. You can't alter them in any way. You can grab them in the Lot library or copy paste them from another unaltered EA-designed town/(or Union Cove);
• World Adventure's specific lots cannot be added to your town;
• Only one of a particular building/lot can be added (i.e. one Waylon’s Haunt can be added, not two);
• You cannot bulldoze existing structures to do so — these must be placed on empty lots, but you can bulldoze completely empty lots. This will let you free up space to create new empty lots of adequate size with the Edit World tool;
• You can also change an empty residential lot to a community lot type.
• If the neighborhood you choose has no empty lots on which to build a home (i.e. Bridgeport) you are free to tear down one existing home to have a place to build.
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That last exception noted above for use of Edit Town was also just added. Some towns like Bridgeport literally have no empty lots on which to build, so we are allowing players to bulldoze one existing home to give themselves an empty lot to build on.