Unlockable Uber-Sims
After bringing your towns interest level to 100% in any of the six categories you will recieve a message telling you that a special guest will be waiting for you in the hotel. This Uber-Sim will be waiting in the hotel the next day.
| Unlockable | How to Unlock |
| Amazing Daryl | 100% Fun Town |
| Chancellor Ikara | 100% Tasty Town |
| Hopper | 100% Cute Town |
| Mel | 100% Spooky Town |
| Samurai Bob | 100% Studious Town |
| Star | 100% Geeky Town |
Tools to use around town
Once you reach a set level you'll receive a message telling you what new tool you've earned.
| Unlockable | How to Unlock |
| Blow Torch | Have your town reach four stars |
| Crowbar | Have your town reach one star |
| Pickaxe | Have your town reach three stars |
| Saw | Have your town reach two stars |
| Town Monument Blueprint | Have a 5 star town |
Unlock Special Outfits and Items
There is a hidden password system in Mysims to unlock unique outfits and special furniture. To reach this password screen, do the following.
-While running around town, bring up the pause screen with the - button. Then input the following commands on the Wiimote (not nunchaku):
2 button, 1 button, Dpad down, Dpad up, Dpad down, Dpad up, Dpad left, Dpade left, Dpad right, Dpad right.
A special keyboard to enter passwords will now appear allowing you to unlock clothes and furniture. The following 3 passwords are a gift for reserving the game, and are case sensitive!
| Password | Effect |
| F3nevr0 | Bunk Bed (Furniture) |
| N10ng5g | Camouflage pants |
| Tglg0ca | Diamond Vest (Outfit) |
| Gvsb3k1 | Genie Outfit |
| Ghtymba | Hourglass Couch |
| I3hkdvs | Kimono Dress (Outfit) |
| T7srhca | Modern couch |
| Ahvmrva | Racecar Bed (Furniture) |
| Itha7da | Rickshaw Bed |
| R705aan | White jacket |