Making NewGRF

[GrapefruitSalad97]

Hi, does anyone know how to make newGRF mods and if you need a specific program to do it because I really want to maybe try and make my own train to go with the Dutch train set as a lot of the locomotives are transparent

Thanks

[planetmaker]

Please read the stickies in the NewGRF development section and use at least *slightly* the forum search function(s).