TASmod
TASmod gives players tool-assisted speedrunning controls for Minecraft 1.12.2, with input playback, savestates and tick control.
What it does
Tool-assisted speedrunning tools for Minecraft are the core of TASmod. It includes input playback, so a recorded run can be replayed frame by frame. Pressing F8 switches the tickrate between zero and other values, and while the tickrate is zero, F9 steps the game forward by a single tick. Pausing works on both the client and the server side.
J writes a savestate into the saves folder under .minecraft/saves/savestates, and K loads one back. Recordings and their savestates are stored under .minecraft/saves/tasfiles/savestates. Savestates keep working during both recording and playback, and F10 aborts a playback that is running. F6 opens a HUD customization screen, where the position of elements can be changed by dragging with the left mouse button and a background can be added with the right button.
TASmod runs on both Forge and Legacy Fabric, with the latest builds for 1.12.2: Alpha-9 for Forge (2023-05-02) and Beta2.1 for Legacy Fabric (2026-02-06). It is released under the GNU General Public License v3.0 only, and the source code and issue tracker are public. The mod is open source.
Key features
Input playback
Recorded inputs can be replayed, so a run is repeated from the same starting savestate.
Tick control
F8 switches between tickrate 0 and other tickrates, and F9 steps the game forward one tick at a time.
Savestates
J saves the current state of the world, K loads it, and both work during recording and playback.
Customizable HUD
F6 opens a screen where HUD elements are moved by dragging and given a background with a right click.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Optional 1
Use cases
Speedrun practice
Runners can record a route, reload savestates at checkpoints and step through tricky sections one tick at a time.
Replay analysis
A recorded run can be played back and aborted at any point with F10 to compare attempts.
Who it’s for: The mod suits speedrunners and players who study routes in Minecraft 1.12.2. Because the environment is client and server, servers that allow tool-assisted runs need the mod installed as well.
Questions
Does TASmod need KillTheRNG?
Where are savestates and recordings stored?
Which loader should be chosen for TASmod on 1.12.2?
Must the server have TASmod installed too?
In the catalog
TASmod is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 2,920 mods support Minecraft 1.12.2.
More from Minecraft TAS
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/tasmod
- Owner
- Minecraft TAS
- Published
- 2023-03-21
- Updated on Modrinth
- 2026-02-06
- Facts verified
- 2026-10-15