This challenge is inspired by the original Random Legacy Challenge. Full credit goes to its creator. My version has different rules and additional gameplay elements.

Create a founder:
Create a random Sim using the "Randomize" button in Create a Sim. If you want to use custom skins over defaults, assign each skin tone to a number and roll a die to decide. Do not change their gender, appearance and clothes in any category. Use a random name generator for the founder's first and last name.

Aspiration, Personality and Turn-On and Turn-Off:
Assign a number to each aspiration, and use a random number generator to determine which specific aspiration to choose. Do the same for zodiac sign and turn-on and turn-off.

Era Rules:
The era is determined for the founder using a random number generator. The next generations follow the next logical era in sequence.
Example Sequence: 1920s → 1950s → 1980s → Modern Day.

Era-specific Limitations:
Each era is going to change the gameplay. For example:
1920s: Limited to vintage-style clothing, no modern appliances.
1950s: Only certain careers allowed (e.g., housewife/homemaker, teacher, doctor, artist, scientist).
1980s: Must use retro-style clothing and furniture, focus on technology and business careers. (Business, video games, marketing, music).
Modern Day: Full access to all in-game objects and careers.

Starting House and Funds:
Before building the house, use a random number to determine the starting funds (between 20,000 and 50,000 simoleons) The money cheat is needed here.
Moving on to the house;
Option 1 (Random shapes):
Use 3 to 4 random shapes (such as squares, rectangles, triangles) to create the basic structure of the house.
Roll a die to select the shapes and arrange these shapes to form the outer structure of the house.

Option 2 (Fun alternative for variety):
Use the Random Homes randomizer. Generates random houses complete with pictures of the exterior and interior, which can inspire you with different layouts and styles. You can roll only twice.
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General Rules:
1. When the current firstborn reach adulthood, use a random number to select the chosen heir. The chosen heir will take control of the house.
2. In each generation, use a random number generator to determine the number of children the next generation will have (1-5).
3. Some eras have career choice limitations, and you are not allowed to use them. The first random job that is available must be selected, as long as it matches the jobs of the era.
4. If there is no story progression, all offspring must stay in the household until old age.
5. The siblings of the heir are allowed to be in a relationship and bring at least one offspring to the family.

Relationship Rules:
1. Use a random method to select a partner for the founder/heir (for example, make a list of all the sims they know and roll a number to decide).
2. A romantic partner for the chosen heir can move in only after their marriage.
3. In case of affairs or bad marriage, a generation in an era of 1950s can not ask for divorce.
4. If romance sims or any other who wishing to cheat, roll a random number to decide with who and where.
5. The Attack interaction have outcomes when a sim loses:
Minor Injury: 70%
Severe Injury: 28%
Death: 2%
Generate a number between 1 and 100.
1-70: Minor Injury
71-98: Severe Injury
99-100: Death
The death cheat must be used on the sim who lose the fight.

Career Rules:
1. 1980s Era, teens should actively look for part-time jobs to earn money and gain work experience.
2. 1950s Era, female sims must stay at home as housewife. Male sims must build their skills at all times.
3. Whenever a chance card pop-up, the action must be selected randomly. Roll between 1-3.
4. It is allowed to earn money from paintings or gardening.

Generation Rules:
1. Everyone has to stay with the clothes they grew up with, same with turn-on and turn-off, and aspiration.
2. If you wish to match the clothes to the era, you may assign the number of the clothes you want, and roll a die to decide.
3. Alien abduction is not counted as offspring. If abduction is triggered by mistake, the alien baby must be taken away.

Win Condition:
Successfully raise 10 generations of your legacy family.
Have at least one successful offspring with the highest level in their career or aspiration.