Hi !
Thanks for giving Spark Rush a try. it is recommended to use space bar right at the start of the level so you can move quickly to collect the power sparks before they expand outward. Hope this helps. Sound management options are a good idea to add, thanks for the suggestion. I enjoyed playing your game too, good job ദ്ദി(˵ •̀ ᴗ - ˵ ) ✧