Thanks for checking out my game!
The current plan for it is for it to be more open, with different islands you can go to. I am also planning on having some puzzle based areas which will be more enclosed, which is what the fireball is for (there is a test brazier in the level editor which you can light with it).
Side note, there are also some abilities which you didn't mention, so I'm guessing you didn't notice them (which is kinda my fault, the instructions for them aren't obvious and slightly convoluted):
E - Stasis - Lets you freeze in midair for a moment, allowing you to change direction and continue with the same speed.
1 - Time Bubble (I completely forgot to add any mention of this anywhere, whoops) - Things outside the bubble are frozen in time, try playing around with fireballs.
The crash should also be fixed now (I hope)