acecraft012

it lets me click singleplayer and the first create world but as soon as i get onto the menu where you can enter a name and seed I'll click Create new world and it sends me back to the main menu that has singleplayer

Do you want to go the the moon or beyond the moon? this modpack contains a lot of epic mods like optifine, galactic craft and biomes o plenty,and much,much more https://www.technicpack.net/modpack/earth-and-beyond.1037734/updates