This is Minetest, an open-source clone of Minecraft, written on C++ using the Irrlicht engine. It is developed by Perttu “celeron55” Ahola and a number of contributors, and has been in development since October 2010, and it’s still being actively developed.
I grabbed a copy to test it out. It really looks like the Minecraft that I used to play, but with a few differences, particularly in crafting recipes and controls. It also have some basic features, such as dynamic lighting, a working multiplayer, and also a simple server-side Mod API.
They also claim that it’s ‘simple, light, and portable’ and it’s ‘lightweight enough to run on old hardware’. In fact, the FPS really is quite good, unless you count the slight jitter every few seconds or so.
The game has a working Creative mode, with a randomly generated world that is limited to +/-31000 blocks in all directions as of now. They’re also planning to add more Survival elements, but there are only a few of them exists as of now.
I can’t really tell if this is worth the try or not, but if any of my followers haven’t even bought Minecraft for some unknown reasons, playing this might give you a glimpse of what Minecraft looks like.
You can download Minetest by clicking here.