I like the concept. The only thing is that it feels a little repetitive, I can't imagine playing this game for very long. Maybe you could add levels where there are obstacles in the way (defenders, maybe?), or maybe a bigger/smaller field.
Thx for playing! You can simply go back to stage selection then reenter the stage. I want to keep the screen as clean as possible, so an extra button solely to condense those 2 clicks into 1 feels like a waste of space...
The "First Clear Reward" for the One-Shot challenge should be better worded. Currently., it sounds like you get an extra inventory slot, when you actually get a helper slot. Maybe change it to "Equipped Helper Slot +1"?
 "Tracesoccer"){kind=icon}
 "Snowbound"){kind=icon}
 "Incremental Cubes"){kind=icon}
 "Mighty Party"){kind=icon}
Thx for playing! You can simply go back to stage selection then reenter the stage. I want to keep the screen as clean as possible, so an extra button solely to condense those 2 clicks into 1 feels like a waste of space...