Last week for me but I feel you , 280 SR down in a week , 150 of that in one day . <| sep |> It ' s not necessary . You won ' t find yourself scratching your head wondering wtf is going on if that ' s what you ' re worried about . You ' ll miss out on some smaller , minor details , but it ' s nothing to really get too worried about . Having said that , the first game is very good and , due to the art style , doesn ' t look as outdated graphically as you might suspect . Tthe graphics were a real big turnoff when I played the first Mass Effect before playing the second and third one . I had to download a few mods to make it palpable . The first game is also dirt cheap right now with the autumn sale even without the sale the GOTY edition with all the DLC is still pretty cheap so I ' d say pick it up and if you ' re not in a terrible hurry to get through D 2 I ' d give the first one a play through .