AkaNinja101

i had the same problem fullscreen helps but i downloaded syndicates minecraft project world and i copied it into tekkit and FTB yogcraft packs and I'm pretty sure this is the problem but all of my worlds have gone on both!! any suggestions would be appreciated as i worked so hard on these and some were used for youtube so if anyone knows how to get my worlds back (no i didn't back them up) PLEASE HELP! with my worlds and tekkie