[sam_pointer]

From experience, it is quite common to have internal code-names for Facebook games for the purposes of preventing leaks from development canvas apps and the like. These are usually related to the general gist of the game. To coin a made-up example, 'SimAir' might be called 'flying' internally.

[brazzy]

My experience has been that the main reason is that development usually starts before marketing has even decided on the final name. You need to call your dev servers, code repository and bug tracker project something and it's often hard to change retroactively.

It's not even unusual to see multiple different working titles float around.