You can not become a robot in Sims 2, but you can however make one and make it playable!
There are two ways to do this. You can do it using cheats and using a workbench made available by the expansion pack 'Open for Business'. The cheat way will be first.
The non-cheat way is to buy a robot building station under Hobbies, Misc. Once your Sim gets their gold badge, they will be able to make a Servo.
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Yes you do you need Sims 2 Open For Business and then it will allow you to make robots and buy the robot workshop or type in boolprop testingcheatsenabled true and that can make a robot.
The Servo robot's can have babies.
no, you can only become a vampire if you have the sims 2 Nightlife for the PC
On The Sims 2 for PC, you don't buy him, you make him. I'm not sure about The Sims 1, since I only ever had the PS2 version.
There are 2 ways to get a robot. 1 when you get 40,000 life time happiness poins there is an option called my best friend if you get that you get a robot that is your best friend. 2 when you are a level 10 inventor you will get a call for a robot you there a few supplies you need.