This week's XBLA offerings are retro games that influenced future titles. Rush 'n Attack, or Green Beret as it was also known, is an arcade action game that was the precursor to Metal Slug. Save the prisoners of war by yourself or with a friend online or off. Xevious is a shmup that is "100% arcade accurate reproduction ... for the first time anywhere." 1942, Ikaruga and all the other games in the shmup genre, meet one of your granddaddies.