Sorry for late answer people. In the forum thread im more active. Well, Tar will have a great uses in late game, im developing it. About the medium posts AND rails, both will need creosote to be build, but with the next release, creosote will be used too in other things eheh. It should be ok now. In the next release, there´s a lot of new stuff comming. :) If you wanna see progress, take a look in the link Shadowstrik1 posted above.