Does anyone know if the game has a mission to drop the atomic bomb? If not, has anyone created a scenerio?
No, they're aren't in the game because they were such unique missions. The crews were specially trained for this mission.
B-29 simulates more standard bombing missions.
The designer also chose to leave out mine-laying missions as well. Basically the specialized missions would have just added more complexity but not a lot more fun.
He talks about it in the design notes.