Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200066

MacLeod's description:

Genre: Electronica
Length: 3:37
Instruments: Synths
Tempo: 106

A sort of square swing piece using very simple synths (but highly post-processed). It just makes you want to explore that dungeon, doesn't it!? 8bit Dungeon Boss is similar but faster. ISRC: USUAN1200066 029 Dark, Suspenseful 2012