itch.io

Yeah, the theme is related to the timer, and how playing bad makes you slower, and lose points every few seconds. In the end, you have to rack up points fast, and avoid losing them by moving quickly, getting more points, and defeating more enemies; if you lose points, you will greatly lose mobility, and eventually, not getting points will get you a game over

Exactly! You have the essence of it:

Dust bunnies are fiercely competitive, their zeal escalating as they gather more dust. Start with a limited dust supply, strive to accumulate as much as possible, becoming increasingly fervent in your pursuit. However, overreach, and you'll be left with nothing. Waste time dallying, and your dust will be swept away by the wind (the timer will expire). Whether you aspire to be the dustiest bunny you can be or the dustiest bunny in the world, remember, we are all merely dust in the wind...