Board Thread:Plants vs. Zombies 2: It's About Time/@comment-25624073-20150320145829

As most people know, the first four worlds except for Wild West are a walk in the park because the gimmicks are rather easy and gargantuars only appeared in designated levels except for world keys levels and one or two from Far Future.

So the question is as stated above, for example, what other gimmick would Ancient Egypt have besides tombstones. 