Episode 123 picks up where the last stream left off, with the start of a wall running around Basketopia. The plan for today is to keep going: "we're going to continue the planning on that a little bit and then we might start actually building in some of the wall." Every block placed is a placeholder, a line of stone bricks marking where the real wall will go. Basket is the only player on screen; the in-game chat shows Basket's own commands and the server's autosave lines.
Up and over the hill
The first stretch climbs a hill. Basket decides to keep it high and "carry it all the way through," so it will be a tall wall in this area, stepping diagonally up the slope and then working around the top. Part of it leans out over the edge, with some land left outside. The terrain is rocky and uneven, and Basket might reshape some of it, or might leave it "wildernessy." The lava probably goes.
A tower by the cove
Down by the river, the plan is to widen the channel so there is water on both sides of a small island, with a tower on it and bridges across. Basket checks a dark cave for a spawner without a shield ("We're in danger"), but it turns out to be just a cave.
Nearby is a cove with a waterfall that Basket wants to keep. A tower goes in above it, five blocks on each side with the corners cut, and the wall runs straight into it and stops. A small bridge will reach the tower, which guards this part of the channel. Maybe a passage in the cove could lead to the sewers "or maybe even up into the castle."
Where does Basketopia end?
It has been a while, so Basket runs around to remember the layout. A sign there reads "Basket Island." A lake ends up inside the walls, and a land bridge points off toward somewhere that is not Basketopia. On the far side, small docks will do instead of a wall that has to stop for a path. Where boats need to pass, the wall stays raised over the water with "some sort of a gate that they could close."
A second castle on another mountain comes up and gets dropped: "I already have a castle that I have to spend a lot of time doing the inside of." Houses spread out across the mountain might go there instead.
A gatehouse and a corner tower
Where a road stops short, Basket marks out a gatehouse about nine by nine with a three-wide opening. A switchback road could lead from it to a bridge. The world border doesn't reach far that way yet, but that will change "once we get to 1.13." There could even be smaller walls inside the big one, guarding different parts of the city.
Then Basket finds a deep hole in the ground. "I bet this is a John thing." There's a stronghold somewhere under this land. A map from the ender chest shows the whole island, with the castle, the village and the line the walls will follow.
The wall turns at a corner of the island, where it gets a small tower. Blocks run low, so cobblestone fills in. The first pass will be plain stone bricks, with no cracked or mossy blocks mixed in; texture can come later. A low, rocky strip at the end is left outside the walls.
Through the rock
The last stretch heads back past the valley toward village number two, with the castle up on the hill. The plan is for the main harbor to run through here, so there's no city wall along it, just towers on either side.
One rocky outcrop gets a different idea. Instead of climbing over it, the wall will tunnel straight through and come out the other side at height 85, according to the F3 screen. Arches in the wall will let decent-sized boats through. To close the stream, Basket tries a bigger tower pattern, seven blocks to a side, to see how it lines up. The credits run to the end with no gameplay after them.