You can't use mods on Mac or iMac, it only works on PC.
no it does not
No, the PC version will not work on an iMac. You need to get the Mac version.
Yes, 3 broadband can work on an Apple iMac as long as the iMac is compatible with the type of connection provided by 3, such as a Wi-Fi network or a USB modem. To use a mobile broadband connection, you may need to install any required software for the modem or configure the network settings on your iMac. Additionally, ensure that your iMac's operating system is up to date for optimal compatibility.
Sims 3 will not work with a G4 iMac. The game requires a recent Mac with an Intel processor.
yes.
Yes, Fallout 3 is DualShock 3 compatible. If it doesn't work hit start and go to options and see if vibration is enabled. If not hit yes and it should work.
yes
The iMac is a fantastic computer.
yes
Yes just put it in the disk slot.
Try Patching up Fallout 3