Minetest is an infinite-world block sandbox game and a game engine, inspired by Infiniminer, Minecraft and the like.
The community is about the great and open source sandbox game writed in Lua, Minetest.
Feel free to call players for a multiplayer game or publish your project of a mod and everthing related.
Download the game. Check out the wiki.
If I remember correctly items in pipes chose a random direction when the pipe splits. So not perfectly even, but the items will be split.
Another option would be doing something with Mesecons to detect if an item has passed through and then trigger something like pistons pushing the pipes so the item goes in the other direction.
With pipes it just goes into the first one. I had to do some lua programing to evenly disperse the coal. Its not a great solution so I though I would ask to see if anyone else has a better idea