Minetest House. Same if you already have enough tools building materials etc. An open source voxel game engine.
New mobs for your river and sea water. Buy a house in a village and settle down. Use torches to light up your house.
Now to make a house.
With standard settings a day in minetest lasts 20 minutes. An open source voxel game engine. Build it how you like for now just use wooden planks break more trees to make them. Set to false to disable skipping nights when using beds.