In Untitled Fling Game , “fusing” usually means grabbing or spawning two items and colliding them so they combine into a new item, which then takes on a different form or effect. The Steam page describes it as matching and fusing items to create new combinations, while gameplay guides show that the basic loop is to fling items together until they merge.

How to do it

  1. Spawn or pick up the items you want to combine.
  1. Move them close together and fling one into the other.
  1. If they are a valid pair, the game should fuse them into a new item.

What helps

  • Use small, simple items first, since the game’s fusion system is built around discovering item combinations.
  • Keep an eye on size, because the game also mentions managing item sizes to avoid overflow.
  • If a combo does not work, it may just not be a valid fusion pair.

Controls

A beginner guide says the game uses left mouse button to pick up or drop, right mouse button to throw, mouse wheel for fling distance, and E to spawn an object. Another overview video also says the basic flow is to grab items, spawn stuff, and fling everything around.

Tiny example

If you spawn two basic items and one is meant to combine with the other, you can flick them together until they merge into a new object. That is the core “fuse stuff” mechanic described in the available guides.

TL;DR: spawn or grab items, fling compatible ones into each other, and watch for the fusion result.