Idea of a new legacy challenge

Hi, I am Louis, I am a The Sims 4 player since May 2026. And I only have Base Game contents.

So recently, I did have think about buying a DLC content, but instead I decided to create a new challenge after found out the game pack are too expensive among the time where economy is kind of getting worse (thus being rejected anyway and still cannot find a job yet)

So the challenge name is temporarily called Proving Legacy Challenge, here are the rules you must follow:
1.) Use Base Game Content only (this also includes Mods that affect the gameplay), except Free In-Game Marketplace Drops and any free contents that are from Reward Events, such as Lady Bridgerton's Masquerade Ball Login Event
2.) Cheats are allowed, but each generations can be used only twice.
3.) Develop three different families to the 15th Generation.
4.) At least one of the family meet one of the requirements:

• Have at least a pair of twins in one of the generation
• Having relationship (any kind of them,  romantic, villain and friendship are allowed) with service NPC like postman, mailman, maid etc., or build a relationship with Tragic Clown

5.) At least one of the family members in the family MUST maxed out a skill (i.e. Level 10)

Notes
1.) These are for long-term saves (Preferrable)
2.) No reward or punishment mechanism - Play in a way that fits your way of playing this game
3.) Screenshots, storytelling or videos (mainly YouTube) are preferrable.

Enjoy your game. Good Luck