Fun for a few minutes but no staying power
I don't normally play many cursor-avoidance games, but this one was pretty fun.
For a litle bit.
The biggest problem is that the standard game gets stuck in a rut. Having a score of 50k is just as challenging as having a score of 10k. If it gets harder than "Very Fast," then I just did not have the patience to find it. I had to stop the game with over 10 lives left.
The game could benefit from a sliding scale of difficulty. Some examples:
* Make the duration of the powerups be shorter and shorter as time goes by. By the time you hit 20k, the duration should be half of normal. At 40k, the duration is only a quarter.
* Make the cursor size increase faster. I stopped collecting stars for a little bit to see what would happen. I couldn't tell a difference. I would suggest increasing the cursor by 100% for every 3 seconds. Possibly make the rate of growth even faster as you progress. There are a lot of stars, so it's not likely that someone will suffer too much from a fast increase.
* Introduce a new plus sign that reduces your score by even more. Furthermore, it bloats your cursor by 4. This plus sign comes out in advanced stages.
* Introduce larger hazards. Early in the game, all is fine, but later, you see one large hazard come through every 10 seconds. Then, every 5 seconds. Perhaps every 2 seconds. Then, you may see two, three, or even eight of them at all.
In general, ramp up the difficulty as the game progresses. I had no motivation to continue the game. The only way my game would have been over is when my eyes were too strained to see clearly. That is not a test of one's skill but of one's physiological well-being. I'd rather see this be a game of skill.
But the music was nice, and the graphics were all very agreeable.
Oh, and periodically while in the bubble, I would sometimes have the sound of being hit by a plus. I'm not sure if there's a flaw in the code, but the bubble does not protect 100% (which is actually a nice feature, if it's documented).