I have this now: { "angle": 0, "angleRandom": 360, "duration": -1, "emissionRate": 5000, "endColour": [191, 94, 26, 1], "endColourRandom": [30, 20, 0, 0.25], "gravity": {"x":0, "y":0.01}, "lifeSpan": 50000, "lifeSpanRandom": 15, "maxParticles": 500, "size": 2, "sizeRandom": 5, "speed": 0.5, "speedRandom": 0.8, "startColour": [35, 143, 230, 1], "startColourRandom": [32, 0, 0, 0.25] } And it shoots in all directions. Up, down, left, right. But it still "falls" down off the map. Any way to make it go upwards too?