This is how you started your first game probably. Anyways, this is the first button on the main menu.
When you press it, a new screen comes up with a whole bunch of options.
Now that you've gotten this far, here's what the options mean
The top row selects the climate to use. From left to right there are Temperate, Sub-arctic, Sub-tropical, and Toyland. Note that Sub-arctic and Sub-tropical have special rules, and Toyland has a limited vehicle selection
This is how big that map is. The smallest size is 64 tiles while the biggest is 4096. For single-player, 512x512 will give you plenty of room.
This is the starting date where your game starts. The default game starts in 1950. Move the counter up to unlock new stuff.
This is the way the land is generated. I suggest you leave it where it is if already on TerraGenesis.
Only available with the Sub-Arctic Climate, this is how many tiles up before snow will stay there forever.
NO. of Towns
This is how many towns are on the map. It will depend on the size of the map. There is Very Low, Low, Normal, High, and Custom.
NO. of Industries
This is how many industries are on the map. It will also depend on the size of the map.
In OpenTTD version 1.0 or earlier, there is None, Very Low, Low, Normal, and High. None means start without industries.
In OpenTTD version 1.1 or later, there is User funded, Minimal, Very Low, Low, Normal, and High. User funded means you will have to fund all industries throughout the game. Minimal starts with a minimal number of industries.
For the Very low to High values, lower values are more useful at larger maps, while higher values are more useful at smaller maps.
This is how flat or hilly the terrain is.
A smooth map has large fields of even land and slopes are mostly straight lines. A rough map has more changes in height levels and curved slopes. Use the Very Smooth setting for testing proposes.
This is the map the game plays on. Copy it and paste it if you want to play the same map over again or give it to a friend. However, the other options in this window also apply and modify the resulting map. In order to recreate the exact same map, you must also set the other options to the values they had when creating the original map. Town names will still be different.
A higher sea level will create a map with more sea and less land, and vice versa.
This is how the trees are aligned. Keep it where it is, or it won't look good unless you don't want any trees, which is 'None'.
- Variety Distribution
Gives the option of more variability across the map
This is whether you want the map edges to be randomly generated or you manually generating them.
- - N/S/E/W
Whether this edge of the map is water or freeform (water and land). This can only be used if you select "Manual" on the map edges box.
Now that you have set all your settings, press Generate to get started! Once the map has been created you will be taken to the Game interface.