Ivy on a brand new engine

The old Unity Ivy is still up on the main page. Underneath I've been rebuilding it on top of Simurg, a custom engine I'm writing in C :)

What's running below is not the game yet, it's the engine's music demo: six layers (GUITAR, BASS, DRUMS, PIANO, E-GTR, E-GTR-LEAD), tap any to mute/unmute, the L1..L15 row gates which come in automatically. Same melodic stack the rebuilt Ivy will use (: