Which version are you talking about, the older one that was written for the older discontinued PPC Macs, or the newer Battlefront II for Intel/Windows PC? Can you post a web-link to specific version of the game you are talking about?
Unfortunately there doesn't seem to be a free demo of those games where you could try it out, but you might be able to look at the system requirements and look around for some other game demo that has similar system requirements to test out the capabilities of the MacBook in general.
You might be able to run older PPC games that require 1GHz G4 and up to 64MB VRAM, since the MacBook 2GHz Intel CPU is fast enough to run the PPC code under Rosetta emulation about as fast as the native PPC machine. Not sure how demanding the grahpics would be of the shared-memory GMA video on the MacBook.
For example, there are some older Star Wars demos you could try out...
Lego Star Wars, Jedi Academy
http://www.macgamefiles.com/detail.php?item=18907
http://www.macgamefiles.com/detail.php?item=19487
http://www.macgamefiles.com/detail.php?item=18005