Help me find a funny campaign about dragons (description inside).

p.s. what is the difference between heroes 3 and heroes 3.5 anyway?

WOG is an expansion for HoMM3.
They differ... in capabilities. WOG has many new creatures, buildings, etc..
WOG is unbalanced and unstable. Bugs are possible.
In general, a lot of things. Quite interesting for single player :).
Although I prefer SoD :)
Currently, the latest version of WOG is 3.58.