Such a cool game! The way you used the theme is very creative and the gameplay is extremely fun and almost addictive: the wave structure that steadily changes the types of enemies present in the map had me play it again and again (I eventually got a high score of 102!). Trying to make the holes as little as possible while still capturing all chasing enemies is a very interesting decision space that makes the game satisfying and an enjoyable challenge. Really a job well done!
My only advice would be to make the background a little less crowded with flowers to make trinkets and enemies pop out more, especially at the beginning. That being said the pixel art is very well made and the music provides the perfect backdrop for running around creating inter-dimensional holes! :)