An Alien Concept: Weather Machines is a quest available at Level 16. Upon completion of this quest, you unlock the Snow Park and the Weather Machine. Completion of the quest within the time limit of 7 days unlocks snow gear for your Sims.
Steps[]
| Part | Requirements | Duration* |
|---|---|---|
| 1 | Search for UFOs in the Park | 1 minute 30 seconds |
| 2 | Be Nice to an Alien | 1 minute |
| 3 | Become friends with an Alien | Time Varies |
| 4 | Go to the Park | None |
| 5 | End is Nigh on a Soapbox | 9 hours |
| 6 | Become Best Friends with the Alien | Time Varies |
| 7 | Browse the Internet | 4 minutes |
| 8 | Be Nice to Osiris | 1 minute |
| 9 | Spend §16,000 on Electronics | None |
| 10 | Negotiate with a Sim-Eating Plant | 3 minutes |
| 11 | Read Fine Literature | 12 hours |
| 12 | Be Rude to Osiris | 10 seconds |
| 13 | Woo-Hoo | 5 minutes |
| 14 | Deep Sleep | 6 hours 30 minutes |
| 15 | Buy a World Globe | None |
| 16 | Plot World Domination | 10 hours |
| 17 | Be Funny to Osiris | 10 seconds |
| 18 | Play Electronica on a Stereo | 2 minutes 42 seconds |
*Time may vary depending on what star rating the item has.