I'm a fan of roguelike games so this one really sparks that gamer side of me. 

A little feedback or particles when the player activates his ghost capturing tool will make exterminations feels more satisfying.

Congratulations on the submission Cheers!!

This was really fun! I used a strategy of staying near the store so I could always find it, and using the narrow corridor below it as a bottleneck to slow down the ghosts. When the waves were large I backed into the side corridors to slow them down as well. I also really like games where I can power up my character. At first I was just surviving and spending my money on hearts, but then I started to increase my aspiration power and made a lot more money. After that I upgraded to aspirating 2 at a time, then increasing max health, and eventually I could afford the auto revive! It was satisfying getting the aspirator powerful enough that they vanished almost right away. I also liked the music and ghost laughter sounds, and the fact that there were different ghost sizes with different speeds. The big ghosts were my favorite because I could run around them in a circle while aspirating them and they couldn't catch me :)

Very nice job! The art and sound were great, and I really enjoyed the dealing with larger and larger waves of ghosts. I couldn't figure out what to do with the icons on the right side of the screen. I was expected maybe a shop or something were I could buy upgrades/weapons.

Art and sound were really great. Light effect well done too.