DrownedAxolotl
Nice! You actually managed to make a decent game out of a funny sounding title. It’s weird, because for a second after reading the title, I had to do a double take.
Fiddling around in several packs right now: I started GT:NH a while ago, really enjoying Better Than Adventure, but I lost my save and some modified Underdog(I added Valkyrien Skies).
You could pull this off with rofi or wofi(if you’re on Wayland). I don’t know if a theme like this exists already(it should), but if it doesn’t you could just make your own. As for the icons, I think the easiest option would be making an icon theme. If you want to call the menu by pressing the Win key, there’s probably already a built in option for that if you’re on a desktop environment. If you’re not, there are additional programs such as sxhkd you’ll need.
It’s a modified Indev with many changes with the most notable being new biomes and tree types, backported creative mode with sprinting, picture mode, redstone replaced with a gear system and many new contraptions, throwable dynamite you can use to launch yourself into the air, placable slimeballs you can kick around, revamped nether with no ceiling, new monsters to make the game more scary and others.
So sorry to hear this. I wish him a fast recovery.
Honestly, I don’t think coming across this many monsters is that uncommon in vanilla and C:AB. Maybe that’s just my perception skewed by older versions though.