Create an Alien in CAS and make them a Young Adult.

Their human disguise can have as many outfits as you’d like. Your alien’s natural form is only allowed to wear the alien bodysuit from Get to Work. Please use it for every outfit category. If you have custom content for alien suits feel free to use them. 

You have the choice between five aspirations: Friend of the World, Renaissance Sim, Soulmate, Successful Lineage or The Curator. Choose wisely because you’ll have to complete the aspiration for the challenge!

You must have aging on, but feel free to play on either Normal or Long lifespan. You can even edit your lifespan using MCCC if you’d like.

Start off on an empty lot. You can choose one from any world, but please be aware that you cannot move lots for the duration of the challenge.

Go into build mode and purchase the rocket ship (Steampunk Flyamajig) for 5,000 simoleons. It’s the only item you’re allowed to start with.

Once you’ve done that, use the cheat “money 0”. Oh yes, it’s that kind of challenge. You’ll have to make money by any means possible... but no cheating!

Now you’re good to go! 

Your alien cannot start rebuilding their rocket ship until they have 10,000 simoleons, handiness level 5, logic level 3 and programming level 3. It might take a while so they better make themselves comfortable... They’re stuck on this planet, they have no way to communicate with Sixam and they don’t have the parts to fix their damaged ship. It isn’t ideal, but their only option is to try and make a life for themselves here until they can go home.

Your alien sim cannot wear their disguise and may only use mean interactions with other sims until they reach charisma level 3. They just crash landed on a strange planet. They don’t know anything about the inhabitants. They are confused and scared. They must figure out the language and culture of Sims before they can properly assimilate.

Your alien sim can only eat quick meals until they’ve reached either gardening level 2 or fishing level 2. The quick meals are meant to be dehydrated food packets native to Sixam, which your alien scavenged from their ship. They don’t know if the food on this planet will be harmful to them. They must do research to find out.

If another sim sees your alien without their disguise, you must either erase their memory... or kill them. It’s your choice which of the two options you pick. Regardless, your alien’s identity must remain safe at all costs.

Your sim may reveal their alien identity to another sim without any consequences once they’ve become Good Friends with them. Be careful, if the relationship bar goes down too much they may become a threat to your alien’s safety. If the relationship goes below the Good Friends range, your alien will have to eliminate them. They’ve known your alien’s secret for too long. Their memory can no longer be modified without doing serious psychological damage. 

Please note, the above rule is actually from SqueamishSims’ Human Enough Challenge. I just loved it too much not to include it here!

Your alien sim can travel to lots in their own world, but if they want to go somewhere else they will have to pay 50 simoleons per visit. They don’t have the means to travel around! They must purchase a bus ticket or pay someone for a lift if they want to travel to other worlds.

Your alien can change out of their space suit and wear regular clothes when they’ve made their first 1,000 simoleons and reached level 3 of logic. At this point, feel free to give your alien a makeover. You can change outfits whenever you want after that without any limitations.

Your alien cannot have walls or floors anywhere on their lot until they’ve reached handiness level 3 and paid a property tax fee of 5,000 simoleons. They can only have one room to start off with. Your alien is starting from nothing and building from the ground up. They don’t have access to a contractor and need to learn about sims architecture.

For every extra room (i.e. a bathroom or a bedroom) your sim must pay 1,000 simoleons. Please subtract from your household funds using the “money #” cheat. Home-owning is expensive! Your alien sim is learning that the hard way! 

Your alien cannot use romance interactions until they’re at charisma level 5 and they have three Good Friends. At this point, your alien sim is probably still under the impression that they’ll be flying back home very soon. They’re hesitant to pursue a relationship with a human if it isn’t meant to last... 

Your alien can also be part of clubs when they’ve reached charisma level 5 and made three Good Friends. At least one of those friends must be part of the club your alien wishes to create/join. These sims know your alien inside and out and would protect them with their lives. They’re good people to have around.

Your sim cannot have a proper job until they reach charisma level 6 as well as handiness level 3 and logic level 3. This includes part-time jobs, odd jobs and freelance gigs. If your alien hardly has any social skills, how are they supposed to know how the economy works?  

Your alien can only get engaged/married once they’ve reached charisma level 8, logic level 5, rocket science level 3 and have three separate rooms in their house (see above for the house-building rules). Your alien is beginning to realize this might be a bit more permanent than they originally thought. They’re finally allowing themselves to fall in love and imagine the possibility of settling down.

Bonus: If you have City Living, your alien must attend the Romance Festival to learn more about the odd social construct that is marriage.

Have your spouse join either the scientist, secret agent, tech guru, astronaut, politician or military career. They’ve made it their mission in life to protect your alien sim and help keep their secret safe from potential foes. However, the new job comes at a cost.

Your alien sim is now on the government’s radar. They have a chance of getting imprisoned by scientists or S.I.M.S. agents! If your alien sim encounters a scientist, secret agent, politician or military staff you must imprison them in a 4x6 cell on your lot. Inside you may place the cheapest toilet, refrigerator, single bed and sink. They must remain there until their spouse has paid 10,000 simoleons for your alien’s safe return... and murdered the abductor(s) responsible. As this particular rule is a bit more dramatic, it’s totally OPTIONAL!

Your alien sim has to have charisma level 9, rocket science level 5, parenting level 3 and cooking level 3 before they/their partner can become pregnant. They must also have a proper kitchen, living room, bedroom, bathroom and nursery/toddler room. They must be on level 3 of their chosen career. Making a baby is the easy part. Being a parent is hard work, and your alien sim needs to be prepared!

If you have risky woohoo enabled and your alien and/or their partner becomes pregnant before meeting the requirements, please deduct 5,000 simoleons from your household funds. If you don’t have enough, sell items in your home until you’ve paid off your debt. Welcome to parenthood!

At least one child must be conceived in the rocket ship. You can’t have a challenge focusing on aliens without some rocket ship woohoo! Come on now!

Have your alien return to Sixam with their offspring, but only for a visit. They’ve spent such a long time on another planet and have built so many good relationships. They’ve decided they want to stay. 

Note: Your alien may have to return to Sixam a few times to obtain collectibles as those are part of the challenge.

To complete the challenge, one of your alien’s children must be a Young Adult. You can age up your toddlers when all of their skills are at level 3. You can age up your children and teens when they have an A in school.

Bonus: Send one of your alien sim’s children to university so that they can get a proper human education. It’s not actually part of the challenge. You’ll just have bragging rights. 

You can use reward potions and traits, including the Potion of Youth. You can use lot traits. Once you’ve unlocked the ability to join clubs, you can benefit from their bonuses. Is the challenge too hard? Are you struggling? Hahaha good!

Have fun! Feel free to @ me if you’re posting this challenge on Tumblr or making a YouTube series, I’d love to see it! You can follow me on Twitter or support me on Ko-Fi if you’d like. No pressure!

You’ve completed the challenge when...

Your alien has maxed out three different skills. One of them must be rocket science.

Your alien has at least 5 Good Friends, not including their children. Their spouse does count toward the total! Pets do not count!

They’ve completed their aspiration.

They’ve “repaired” their rocket ship.

They’ve been married and had offspring. At least one child must be conceived in the rocket ship.

They have a home worth 60,000 simoleons.

They have a top secret alien lab in their basement.

In the alien lab you must have at least one fang flower, one glow orb, one quill fruit, one unidentified fruit object, one blutonium, one solarium, one crandestine and one nitelite.

One of the children of your alien has grown into a young adult and visited Sixam to learn about their parent’s world.