Spela

Linux gaming optimization tool for NVIDIA GPUs. Manages DLSS DLLs, applies per-game GPU/CPU profiles, and launches games with the right environment — one tool replacing the MangoHud + LACT + DLSS Updater juggle.

Install

AUR (Arch Linux)

paru -S spela        # stable
paru -S spela-git    # development

Build from source

Requires Go 1.25+, Bun (for GUI frontend), NVIDIA driver, polkit.

git clone https://github.com/jgabor/spela.git
cd spela
mage build     # builds binary with embedded frontend
mage install   # installs to GOPATH/bin

Quick start

As a Steam launch option (wrapper mode)

Set a game's launch options in Steam:

spela %command%

Spela detects the game, loads its profile (or the default profile), applies DLSS settings, GPU clocks, CPU governor, and environment variables, then launches the game. Everything is restored on exit.

CLI

spela scan                          # scan Steam libraries
spela list                          # list detected games
spela show 1091500                  # show game details (Cyberpunk 2077)
spela dll check-updates             # check for newer DLSS DLLs
spela dll update 1091500            # update DLLs for a game
spela profile create 1091500        # create a game profile
spela dlss set 1091500 --sr-mode quality --fg-enabled
spela launch 1091500                # launch with profile applied

TUI / GUI

spela tui    # interactive terminal UI
spela gui    # graphical interface (Wails + Svelte)

CLI commands

Command	Description
scan	Scan Steam libraries for games
list	List detected games
show	Show game details
launch	Launch a game with its profile
profile	Manage game profiles (list, create, show, delete)
config	Manage global configuration (show, set)
dll	Manage game DLLs (list, check-updates, update, restore)
dlss	Configure DLSS settings (show, set)
gpu	GPU tuning and information (info, reset)
cpu	CPU tuning and information (info, governor, smt)
tui	Launch interactive TUI
gui	Launch graphical interface
denylist	Manage the DLL swap deny list (show, check, allow, deny)

Profiles

Per-game YAML profiles stored in ~/.config/spela/profiles/. A profile controls:

name: "Cyberpunk 2077 — Quality"

dlss:
  sr_mode: quality
  sr_preset: E
  fg_enabled: true
  indicator: false

gpu:
  shader_cache: true
  clock_offset: 150
  memory_offset: 200

cpu:
  governor: performance
  smt: true

proton:
  enable_wayland: true
  enable_hdr: true

overlay:
  enabled: true
  position: top-left

Profiles compose with a default profile (~/.config/spela/default.yaml). Game-specific settings override defaults. spela launch applies the effective profile and restores everything on exit.

Configuration

Files follow XDG Base Directory specification:

~/.config/spela/
├── config.yaml           # Global settings
├── default.yaml          # Default profile
└── profiles/
    └── <app-id>.yaml     # Per-game profiles

~/.local/share/spela/
└── backups/              # DLL backups per game

~/.cache/spela/
├── dlls/                 # Downloaded DLL cache
└── manifest.json         # DLL version manifest

System requirements

• NVIDIA GPU with proprietary driver (nvidia-utils)
• polkit for privileged operations (GPU clocks, CPU governor)
• Steam with Proton-enabled games
• Linux (Wayland recommended, X11 supported)

License

MIT