Below is a list of scenarios that you can use or add to. For instructions on how to add to the list please see Scenarios. This is a list of scenarios that are hard.
Get Your Ships!
A nice scenario that will force you to use ships to get your goods to the factories, in start you will find it hard to make money since you can NEVER rail all the way from the extreme high productive raw-materials to the factories. The best way to start would be some passenger-lines and a small hidden forest+sawmill for little income.
This scenario makes it possible to build the whole island full of transport networks. With the oil wells in the north and in the south, the scenario delivers a great potential to exploit the whole island. You can even start setting up a boat service, which makes the coast villages grow, so you can build a passenger network a few years later. You can also choose to just build a gigantic railway network, that transports all kinds of products to the island's population.
The North of England, from Barrow in Furness in the N-W to Lincoln in the S-E. The location of the towns are approximately correct, but not their size. The industries have been placed to make an interesting game, and you must have Pika Basic Industries v1.5 grf. Replacement Town for OpenTTD grf is also recommended. Note that there aren’t many sawmills, oil refineries or steel mills so don’t lose them by not supplying them early. Please don’t bulldoze the Pennines flat just to connect Leeds with Liverpool.