Bypassing the limitation of 999 maps:
If you are reaching the maplimit in RPG Maker XP you can follow these steps to have more than 999 maps in your game.
Step 1: Create a copy of your project with the exact same data as a mapcreation project.
Step 2: Delete the old 999 maps from the copied project and open it.
Step 3: Use this project to create your new maps. If you are done, rename the new maps from
"Map001.rxdata, Map002.rxdata, Map003.rxdata"
to
"Map1000.rxdata, Map1001.rxdata, Map1002.rxdata"
and so on.
Step 4: Move the renamed maps from the copied project into the main project. It should look like this then:
Step 5: Use variables to transfer to all maps with an ID higher than 999
That's it!
(Remember that you can't access any map higher than 999 from the editor so you have to edit them in your project copy and repeat the steps 3 and 4)
If you are reaching the maplimit in RPG Maker XP you can follow these steps to have more than 999 maps in your game.
Step 1: Create a copy of your project with the exact same data as a mapcreation project.
Step 2: Delete the old 999 maps from the copied project and open it.
Step 3: Use this project to create your new maps. If you are done, rename the new maps from
"Map001.rxdata, Map002.rxdata, Map003.rxdata"
to
"Map1000.rxdata, Map1001.rxdata, Map1002.rxdata"
and so on.
Step 4: Move the renamed maps from the copied project into the main project. It should look like this then:
Step 5: Use variables to transfer to all maps with an ID higher than 999
That's it!
(Remember that you can't access any map higher than 999 from the editor so you have to edit them in your project copy and repeat the steps 3 and 4)