Short answer: Yes, of course.
Technical answer: The operating system in itself, can play Left 4 Dead 2. But to play Left 4 Dead 2 you need good enough parts to run it. Make sure you meet the system specifications on it's steam page.
Left 4 Dead 2 will only be available for the XBox 360 and computers running the Windows operating system. You will need to install Windows on your MacBook Pro to be able to play the game.
You can try going to en.softonic.com to download a free copy of Left for Dead 2 for Windows 8.
4 players can play in Left 4 Dead 2.
Yes, you can play left 4 dead 2 on steam if you buy from Gamestop.
no it is not currently: xbox and windows pending: mac
Left 4 Dead 2 is not made specifically for mac, but if you use crossover games or cider on an Intel mac you can play PC games natively on mac. Alternatively, you can install windows through boot camp or a vurtial machine, but windows tends to be buggy and your computer may randomly shut down during game play, so stick with cider. From April 2010 Left 4 Dead 2 will be available for the Mac via Steam. (See links below)
You have to download Steam on your computer, then Left 4 Dead 2 can be bought from that.
You can purchase The Sacrifice DLC for Left 4 Dead 2, which has you play as characters from the first game. Additionally, you can put character skins of the original characters onto the characters of Left 4 Dead 2 (Only in the PC version)
yes
Left 4 Dead 2
i play it with my boyfriend& friend
No, Left 4 Dead does not have a split screen option. The only way to play with someone is online.