Learn more about Mass Effect. (Flash demo) SynopsisEvery 50,000 years, ancient machines swoop down and send the galaxy spinning into a continual cycle of extinction. Careful not to leave behind any evidence of their existence, these merciless machines have fooled everyone into thinking this deadly process is just a legendary hoax, but you know the truth. The most important struggle the galaxy has ever seen now needs your help. Join the fight against an alien onslaught and save the future of the universe.