Main difference from the version you might be used to play.
This is 1.12.2 instead of old 1.9.4
There is no civic, no strategic goods , no units , citystate , ''limited market'' , ruins , unhappiness from construction townhall.
Bows are functional , there is a ender world with T5 mobs and a worldboss , Cottage should be viable. Mine doesnt give unhappiness , Wonder hammer aren't horribly high. Mine only consume redstone. Couple of building lack their NPC they use sign. Wood can be planted anywhere . There is no ''darkness''. Mob doesn't have fire aspect neither jump (outside savage) , There are no veteran ranks. Culture level works correctly and start from 1. Shipyard can be build in river.
Flag recipe is different and use the old 24h method. World is custom but still keep a vanilla feeling. Main feature consist of no ocean temple/desert temple etc , no mineshaft or ravine/cavern, bedrock is flat. River are bigger.
We apologize if there any difference missing. It's rather hard to remember everything that was changed.