emulator: UXN
type: libretro
core_classification: community_fork
source: "https://codeberg.org/iyzsong/uxn-libretro"
upstream: "https://github.com/chmod222/zuxn"
profiled_date: "2026-03-25"
core_version: "0.0.1"
display_name: "Uxn / Varvara (zuxn)"
cores: [uxn]
systems: []
files: []
exclusion_note: >
  Uxn/Varvara is a software-defined stack machine with 64KB of memory.
  The VM has no firmware or BIOS. ROMs compiled from Uxntal assembly are
  loaded directly via libretro game_info. The .info declares no firmware.
notes: >
  Libretro wrapper around the zuxn library (Zig implementation of the
  Uxn/Varvara spec by Hundred Rabbits). The file device in Varvara handles
  ROM-initiated I/O but does not load system files from the system directory.