The Creeperhost guys (Luke) said it might be helpful to people to post the way we tend to do version numbers for modpacks. First Number = Number of possible intended world resets or major mod removal/addition 1 = first Beta release version 2 = first stable version may require a world reset from full beta 3+ = new major versions that may require a world reset (can't think of any packs we have used that on) Second Number = Beta vs Stable 0 = Public Beta - used generally while a pack is still undergoing major changes - This number means you have a higher chance of world destroying bugs/resets 1 = Stable - nothing major is expected to change unless the first number changes 2 = Stable - minor pack change - we may have removed a mod or shifted an ID, doesn't require a world restart but things may be odd Third Number = Which update is it. So DW20 1.0.23 = First beta release version , Public Beta, unstable and may change, 23rd update Ag Skies 2.1.6 = First Stable version , 1 possible intended world reset (not counting bugs) , 6th update. And yes on some occasions we skip a number. That usually means in testing the pack failed so hard we jumped a version. Not sure how useful it is to y'all but Luke should be happy.