Game name: Love

Description: Description: Love is a unique and relaxing high-score game where you risk getting hurt to gather happiness. It features a fully interactive soundtrack that is entirely directed by the player’s actions, which is why I strongly suggest you play it with sound ON, headphones being the best :)

How to play: There’s a short tutorial to teach you the basics, access it by clicking the button at the top of the menu screen (it should remind you of a song).
You only need your mouse to play (you can try with a trackpad, but it doesn’t feel as good in my opinion).
Also, the up/down arrow keys show/hide the score during play.