There are also meow sounds.
In the underground, the nyancats are still rare with surprisingly high discrepancy.
To get up to the nyanland, the player can either build and use a special portal (see below) or, if he/she has sufficient permissions, teleport there. To get back back to the surface, the player should have a way to teleport, e.g. by dying or with the /spawn command.
Information about the license and download can be found at https://codeberg.org/HybridDog/nyanland.
The original mod has been created by Jeija a long time ago.
Spoiler

Portal build instructions
Image of an active example portal: Ingredients:- default:sand
- 12 default:torch
- 10 default:mese
- 4 default:water_source (or buckets of water)
- 1 default:stick
- Find a flat area on a beach with a lot of sand
- Place two mese blocks on top of each other somewhere on the beach
- Place a ring of 8 sand nodes around the lower mese block
- On top of each of the 4 corners of the sand ring, place a sand node and a torch on top of it
- Place a circular ring of 16 sand nodes around the ring of 8 sand nodes such that there is a gap of 12 nodes (3 in each direction) between this ring and the ring of 8 sand nodes
- For each previously-mentioned gaps of 3 nodes:
- Dig 2 nodes deep in the 2 outer positions and place mese in the lower part of both holes
- Put water on top of the middle node of the gap
- At each corner of the circular ring of 16 sand nodes, place a torch at one node further away diagonally and a torch at 2 nodes further away diagonally. These torches should be placed at the same height as the circular ring of 16 sand nodes, and thus also the ring of 8 sand nodes.
- Stand on top of the mese block in the middle of the portal
- Punch the mese block with a stick. Smoke should appear and a sound should play and after a little bit of time the teleportation should happen. If the sound and/or smoke is missing, the portal is not built correctly.