Jump²
by Addi3_Astarr
Jump² lets players jump a second time in mid-air, a mechanic borrowed from older arcade-style video games, and it is built for Fabric on Minecraft 1.20.1.
What it does
The mod gives the player a double jump: after leaving the ground, the player can press jump again while airborne to gain one extra leap. The effect recalls the double-jump mechanics of classic arcade platformers, and it changes only how the player moves. Terrain, mobs and the rest of the game work as in vanilla.
Installation uses the Fabric loader on Minecraft 1.20.1, and its files are published for that version only. The mod runs on the client and on the server, so the server and every player need it. Its code is not open source, and the author keeps all rights, with public source code, an issue tracker and a wiki available to read.
Key features
Mid-air double jump
Pressing jump a second time while airborne triggers one extra leap, letting players reach ledges they could not reach by jumping once.
Arcade-style movement
The jump follows the feel of older arcade-style platformers, with the second leap reproducing the timing those games used.
Client and server support
The double jump is handled on both sides, so multiplayer servers can use the same movement rules as single-player worlds.
Public project resources
The source code, an issue tracker and a wiki are linked from the project, where suggestions and questions can be posted.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Platforming maps
Adventure and parkour maps can use the extra jump to design routes that depend on mid-air control.
Multiplayer servers
Server owners can run the mod for all players, so every participant jumps by the same rules.
Who it’s for: Players who enjoy platforming and want a double jump in a Fabric 1.20.1 game, and server owners who run parkour or adventure maps on that version.
Questions
Which loader does Jump² need?
Does Jump² have to be installed on the server?
Can Jump² be used on other Minecraft versions?
In the catalog
Jump² is one of 3,932 Transportation mods on ModsFinder, and one of 2,390 Transportation mods for Fabric. 34,764 mods support Minecraft 1.20.1.
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What the author says
please do not upload this to any other site without Addie's permission -------------
Official listing
- Modrinth page
- modrinth.com/mod/jumpsquared
- Owner
- Addi3_Astarr
- Published
- 2025-11-29
- Updated on Modrinth
- 2025-12-04
- Facts verified
- 2026-10-15