Speedy Minecraft

The whole game runs faster by a number you choose. The default is 2. Everything happens twice as fast.

Mobs move and swing twice as fast. Crops grow twice as fast. Furnaces smelt, brewing stands brew, hoppers pull, spawners spawn, redstone fires, water flows, TNT explodes and the sun sets twice as fast. You walk, sprint, mine, eat and attack twice as fast too.

For Minecraft 26.2 (Fabric).

Installing

1. Install Fabric Loader for Minecraft 26.2.
2. Put speedy-1.0.0.jar and Fabric API in your mods folder:
   • Windows: %appdata%\.minecraft\mods
   • macOS: ~/Library/Application Support/minecraft/mods
   • Linux: ~/.minecraft/mods

Only the server needs it. Everyone can connect with a completely vanilla client. Your faster walking arrives as an ordinary speed value and the faster day arrives in the normal time packet, so nothing has to be installed on anyone's machine.

Works on an existing world. Turn it on and off whenever you like.

This is not the tick rate

The obvious way to make Minecraft faster is to run the server at 40 ticks per second instead of 20. This mod deliberately does not do that. The game still runs at 20 ticks a second — what changes is how much game happens inside each one.

That means it behaves like a real speed setting rather than a fast-forward button. Your framerate is unaffected, the server does not need twice the CPU headroom to keep up, and you can change the factor mid-game without anything lurching.

What runs faster

Everything that is an entity. Every mob, item, arrow, boat, minecart, falling block, TNT, fireball, XP orb, painting and armour stand is stepped through its whole life more than once per tick. That is not a movement multiplier bolted on the side — it is the same code the game already runs, run again — so a mob's walking, pathfinding, attack cooldown, aggro, breeding cooldown, baby growth, despawn timer and burning all speed up together and stay in step with each other.

Everything that is a block entity. Furnaces, blast furnaces, smokers, brewing stands, hoppers, droppers, dispensers, campfires, spawners, beacons, conduits, crafters, bells, jukeboxes and the sculk.

Everything on a random tick. Crops, saplings, sugar cane, bamboo, cactus, mushrooms, vines, kelp, fire spreading, ice and snow melting, leaves decaying, copper oxidising, dripstone dripping and sculk spreading.

Everything on a delay. Redstone repeaters and comparators, observers, pistons, dispensers, TNT fuses, note blocks, and water and lava spreading. These all work by asking to be woken up in so many ticks, and the request is shortened as it is made, so a redstone circuit speeds up as a whole and stays in time with itself.

The clock. Day, night, moon phases and everything that keys off the time of day.

The weather. How long rain and thunder last, and how long you wait for the next one.

You. Walking, sprinting, flying, mining, attack cooldown, eating, drinking, drawing a bow, hunger, potion durations, and cooldowns like the ender pearl and the shield.

What does not

Worth knowing up front, because "everything" is doing some heavy lifting above.

• How fast mobs spawn. Left alone on purpose — doubling the spawn rate on top of everything else is the fastest way to make a server unplayable.
• Drowning, burning and freezing timers on players, the sleep timer, and how long a nether portal takes to pull you through. These are on the small list of player counters that are not advanced by hand. Every one of them behaves normally for mobs.
• How fast the world generates. That is not a game mechanic, it is your CPU.

Commands

Changing the factor takes effect instantly, on players who are already online too.

Settings

A file appears at config/speedy.json the first time you run the mod.

{
  "enabled": true,
  "factor": 2.0,
  "entities": true,
  "blockEntities": true,
  "randomTicks": true,
  "scheduledTicks": true,
  "dayNightCycle": true,
  "weather": true,
  "players": true,
  "playerTimers": true,
  "itemUse": true
}

Every one of these can be turned off on its own, so you can have a world where the crops race ahead but the mobs do not, or the reverse.

Fractions work. A factor of 2.5 gives everything two speed-ups every tick and a third one half the time, which averages out to exactly two and a half.

Things worth knowing

• Start around 2. Three is chaotic and five is barely playable. That is not a bug, it is what five times faster feels like.
• Higher factors cost more CPU. Ticking every entity three times is three times the work. A busy farm at factor 5 will make a small server sweat.
• Redstone stays in time with itself because every delay is shortened together. Circuits that depend on exact tick counts still work; they just finish sooner.
• Mobs are genuinely harder. A zombie that closes distance twice as fast and swings twice as often is roughly twice the zombie.
• Hunger drains faster too. Bring more food than you think you need.