Fans of the speedrunning community may have heard that the current world record for the original Super Mario Bros has been smashed by a few milliseconds. The previous world record, set by i_o_l was 4:57.69 while the new record, completed by user Darbian, was polished off at 4:57.627. Check out the YouTube footage of it below:
Not only did Darbian beat the world record, he believes he can also shave a few more milliseconds off his time. For a more technical explanation on how (and explanations on the exploits used), check out the reddit post below.