Minecraft players often build things in-game that are just incredible, such as complicated computer systems and highly detailed cities. Recently, an individual used the Valkyrien Skies x Create: Clockwork addon to make a fully functioning train engine. A Minecraft player and Reddit user named Equivalent-Bus2217 shared an almost 3-minute-long video showing the functioning engine moving in the game.The post's caption suggests this was made using the Stephenson Valve Gear.Built a Train only using Physics byu/Equivalent-Bus2217 inMinecraftbuildsOne of the first comments was by another user, Fritzschmeid, who asked the original poster what mod they had used for the physics simulation. While the original poster didn’t reply, one individual by the name of WEZIACZEQ said that it was the Create mod. However, the build is made using Clockwork: Create x Valkyrien Skies, an addon mod for Create and Valkyrien Skies mod. Comment byu/Equivalent-Bus2217 from discussion inMinecraftbuildsComment byu/Equivalent-Bus2217 from discussion inMinecraftbuildsThis Minecraft mod is one of the most popular and powerful physics simulation and automation mods that allows players to create incredible machines in-game. It is available on CurseForge and comes with other add-ons to facilitate unique creations.User Fritzshmied replied to WEZIACZEQ's comment, saying they did not know the Create mod could present physics as shown in the video. They also asked if a plugin is needed to make something like the functioning engine. User Aadoxed mentioned that there is an addon, Create: Clockwork, that makes the physics possible.Reddit reacts to the working train build (Image via Reddit/Equivalent-Bus2217/Mojang Studios)User classick117 jokingly commented that the original poster should create the trolley problem now. This is a philosophical or ethical dilemma that puts you in a difficult situation where you can choose to save five people by letting one die.User smellvin_moiville jokingly commented that the original poster also used Minecraft. This refers to the caption used by the poster, where they suggest they used a mod to make the engine but don't mention the game.Some Redditors suggested ideas (Image via Reddit/Equivalent-Bus2217/Mojang Studios)User varialflop commented that the build was incredible and that perhaps the original poster could create an entire rail system and replace the train's wheels with something else for better and smoother acceleration.Considering that there are no wheels in the game, it is difficult to find anything that can be used for smooth movement. Perhaps the original poster could use a mod that adds wheels to the game.Minecraft has seen some brilliant buildsA recreation of Shiganshina District in the game (Image via Reddit/a1ndrea/Mojang Studios)Minecraft players have built some fantastic structures and machines in the game over time, including the aforementioned functioning engine. Another impressive build worthy of attention is the Shiganshina District, which is from the popular anime Attack on Titan.Another player made a 1:2-scale Mt. Everest in the game. This build is almost a near-exact replica of the real mountain. And players can climb it without the life-threatening challenges that come with making your way up the real Mt. Everest.