For some reason, I've always liked Riverview more than Sunset Valley. (It's probably that one island in the middle of the river. Yeah, It's definitely that island). Based on my previous "Save Sunset Valley" Challenges, We're going to do the same thing to this world!

Pre-game:

1. Make sure you actually have Riverview installed in your game. It's free from the Sims 3 store, so there shouldn't be an issue getting it.
2. Create a random sim to plop down on some empty lot in Riverview. Whether or not you actually play with this sim later is totally up to you.
3. Immediately upon moving that sim into an empty lot, move to edit town and the game proper can begin!

Editing the town:

1. Delete absolutely every lot in town UNLESS it has a rabbithole on it.
2. There's a glitch that has all the rabbithole lots set to "none" so make sure to switch those over to "no visitors allowed". The sole exception is the cemetery, which does not need to be changed... I think.
3. Reconstruct the town from the ground up!

Now the fun part begins! We're going to start making all sorts of different lots and families, so Here's a list of things you absolutely MUST include in your build:

1. Create at least 50 playable families. They all need places to live, so build that too! If you're feeling extra creative, you can also make empty houses as well.
2. Because we deleted all the original base game community lots (except the graveyard, since it has the mausoleum rabbithole), We'll have to put in new ones. Here's the list of required community lots:

Art gallery
Beach
Big park
Fishing spot
Library
Gym
Pool
Small park

3. Depending on whichever expansion packs you have, you'll also have to add in the following lot types:

World Adventures: Academy, Chinese Garden, and Nectary
Ambitions: Consignment store, Fire station, Junkyard, Laundromat and Salon. You also need at least one Hangout
Pets: Equestrian center and Pet Store (Only if you have the Pet store register)
Supernatural: Elixir consignment store. You must also place the following rabbitholes: Arboretum, Gypsy Wagon, and Vault of Antiquity.
University Life: Arcade, Java Hut, Nerd Shop, Rebel Hangout, and University Hangout
Into the Future: Bot Emporium, Cafeteria, and Gallery shop.

Let your creative juices flow, and have fun!