Depends on what you mean. If you're talking the entire game, we had 5 full time people and several temporary/contractors.

If you're talking art-wise, we had 3 main game artists. Myself doing most of the moving stuff. My art director who did all the backgrounds and a lot of the menu art, and a UI artist who did all the HUD stuff, buttons, menus, etc. The rest of them worked on programming, design, sound, and cinema stuff.