Max, your english is excellent, it's just that you use the word "one" when you should be using "a" or "an". Generally the word "one" is only used to specify and emphasize quantity, like "just one more thing" or "I have only one question".
For example, in your recent post:-
"A fun game to play, it has space, and dogfighting, and FPS, multi-crew stuff, was always what I looked for in one a more persistent MMO scenario."
I'm guessing that you might speak german, and are replacing "ein" with "one" instead of "a" or "an" because in german they would be the same word?
Anyway, it seems a shame when all your other english is so good!