You call it quirky, but it's more! :D
This song has a great bass sound, & that authentic DnB drum beat as well.
What was the BPM on the drums(if you know)?
The foreground sound is a high-pitched one, almost like in a classic video game.
To a person with an open mind, it's an awesome, new idea to try in the DnB subgenre!
In short, this could definitely be made a full song, but you should add some variation.
Variation being: The music winds down/fades for 10 secs, then winds back up for 10 more
secs, this time putting a very subtle change to atleast 1 of the instruments.