Ultimate Time Stop v1.8.4 (NeoForge 1.21.1)

The biggest 1.21.1 update yet: Time Prediction, Combat Slow Motion and Self Acceleration arrive on 1.21.1, plus optional support for Sable physics structures (Create Aeronautics), TaCZ guns and Curios watch slots. Everything below is new since v1.6.1.

Multiplayer: the server and every player need this version (1.8.3 also works with 1.8.4). Older versions can't join.

What's New

1. Time Prediction (Netherite and Creative watches)

• Slows the world around you and shows what is about to happen: glowing paths for mobs and projectiles, see-through "future" silhouettes and landing rings.
• See enemy shots before they are fired, potion areas, incoming explosions and where an Enderman is about to teleport.
• Right-click a slowed arrow to catch it, or hit it to send it back.

2. Two new watch variants

• Combat Slow Motion (on the Slow Motion card): slows mobs and every projectile while players, blocks and the server keep normal speed.
• Self Acceleration (on the Fast Forward card): speeds up only you. Walking, falling, mining, placing, eating, attack recharge, cooldowns, effects, hunger, healing, breath, burning and freezing all run at the Fast Forward speed.
• Switch with the World · Combat / World · Self labels on the cards, or press the new B key without opening the watch.

3. Sable, Create and Create Aeronautics (optional, experimental)

• Time Stop, Slow Motion, Fast Forward, Deceleration and Rewind now work on moving and assembled Sable structures: airships freeze in mid-air, slow down, speed up or rewind, including joints, riders and structures splitting apart.
• Tested with Sable 2.0.5, Create 6.0.10 and Create Aeronautics 1.3.2. Please report anything odd. This part is still marked experimental.

4. TaCZ guns (optional)

• Bullets freeze, slow down, get redirected and ricochet with the time modes and runes, plus Chrono Coins (+RICOSHOT) and Dead Eye.
• Tested with TACZ 1.21.1 by MUKSC (1.1.8-hotfix-r7).

5. Wear your watch (Curios)

• With Curios installed, put a pocket watch in the new Pocket Watch slot. V activates it and J opens the watch screen.

6. Creative Watch, rewind and settings

• Rune matrix: switch all 15 runes on the Creative Watch on or off individually, or all at once.
• Radius editor: pick a bubble size from 1 to 512 blocks.
• Rewind Self toggle: with Self: OFF you keep your position, health and items while the world rewinds. Server owners can block this with /timestop rewind allowexempt false.
• Casual acceleration and Swim in stopped time settings (H menu → Visuals & FX).
• Deceleration Field now slows only projectiles; everything else keeps normal speed.
• /timestop redirect look and the Vector rune now send projectiles exactly where your crosshair points.

Fixes

• Rune of the Tachyon: the 3x mining speed in Slow Motion and Matrix now works.
• Your settings stay yours: joining a server no longer overwrites your own speed and swimming settings.
• Lithium: fixed a crash when random-tick optimizations rewrite chunk ticking.
• Rendering mods that replace cloud rendering can no longer stop the game from starting.

Tested With

Sable 2.0.5, Create 6.0.10, Create Aeronautics 1.3.2, TaCZ (MUKSC r7), Curios 9.2.2, Sodium 0.8.12 + Iris, Lithium, ModernFix, FerriteCore and ServerCore.

Requirements

• Minecraft: 1.21.1
• NeoForge: 21.1 or higher
• Java: 21
• Optional: Curios 9.2.2+, Sable 2.0.5 (with Create / Create Aeronautics), TACZ 1.21.1 by MUKSC
• With Sable installed, use Sodium 0.8.12 or newer (Sable's own requirement).