In the sims 2 whenever I try to invite a household over or host a party I am only able to invite 2 sims on my laptop. When I played on my desktop I could invite the standard 8. I heard that it depends on your RAM and hardware. My specs are an intel i5 1.8, 6 RAM, 500 HD, Windows 8.1, and nvidia gt 720m. MY secs should cause no problem, the sims 2 came out when people used 512 or 1 GB of RAM. What is with this?
Some people have these kind of problems with newer laptops, apparently the game doesn't recognize that your laptop can actually handle more than 2 sims.
You can either use this cheat: intProp maxNumOfVisitingSims 8 (must be done on neighborhood view, or just put it on your userstartup.cheat)
Or you can download Throw Massive Parties mod at http://www.simwardrobe.com/ , on Sims 2/Fixes