Didn't play the previous games but I really liked good old open TTD. TF2 looked promising. Graphics is nice, somehow manages to run under Linux also. I also like the gameplay mechanics, but the problem is all the small quirks and unpolished details that will just leave you in suspicion that you are playing not well tested game but paid full price. Example 1: Wanted to connect station and depot which are not quite on the same terrain level. The line mechanism just freaked out and tries always to build a tunnel under. Had to delete stuff few times till it snapped correctly. Example 2: You define a cargo line with specific cargo to be picked. An empty vehicle comes and decides to pick some other random cargo. Goes around empty and you loose money. Another annoying things are the small 'riddles' like you have to 'search' for lost sheep on the map by clicking on random terrain points marked by exclamation mark. This is just stupid and belongs to completely other kind of game. Sorry, this could be a good game but they did not make it.