Are there any games with the theme of space opera, such as quality effect?

There are some such games, but they are not as good as the quality effect series. After all, this is a masterpiece. Although there are some such themes, there are not many RPG science fiction games, let alone space operas.

I think the most similar works are War Machine series, Halo series and Star Wars series, Warhammer 40000: Star Wars, but these are basically FTS games, with few RPG elements, and they will feel much worse in playing and image quality. Now wait, mass effect 3 released it on March 6, 20 12. The third part absorbs all the advantages of the last part and adds many new elements according to the suggestions of the players, which will be more fun.