diff --git a/configuration.nix b/configuration.nix
index 2f8a7a3..39a8f47 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -9,14 +9,27 @@
       # ./hardware.nix # Set in the up.sh script among the files in hardware/
       ./networking.nix
       ./user/user.nix
+      ./specialisation.nix
+      ./gaming.nix
     ];
 
+  # Fails for some reason
+  documentation.nixos.enable = false;
+
   nixpkgs.config.allowUnfree = true;
 
   nix.extraOptions = ''
     experimental-features = nix-command flakes
   '';
 
+  nix.optimise.automatic = true;
+
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 7d";
+  };
+
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It‘s perfectly fine and recommended to leave
diff --git a/gaming.nix b/gaming.nix
new file mode 100644
index 0000000..8135175
--- /dev/null
+++ b/gaming.nix
@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+{
+  programs.steam.enable = true;
+  programs.steam.gamescopeSession.enable = true;
+  programs.gamemode.enable = true;
+
+  users.users.lyes.packages = with pkgs; [
+    mangohud
+    protonup
+  ];
+}
diff --git a/specialisation.nix b/specialisation.nix
new file mode 100644
index 0000000..7aefeb3
--- /dev/null
+++ b/specialisation.nix
@@ -0,0 +1,43 @@
+{ lib, ... }:
+
+{
+  specialisation = {
+    gaming.configuration = {
+      hardware.nvidia = {
+        prime.sync.enable = lib.mkForce true;
+        prime.offload = {
+          enable = lib.mkForce false;
+          enableOffloadCmd = lib.mkForce false;
+        };
+      };
+    };
+
+    kde.configuration = {
+      # GNOME
+      services.xserver.displayManager.gdm.enable = lib.mkForce false;
+      services.xserver.desktopManager.gnome.enable = lib.mkForce false;
+
+      # KDE
+      services.desktopManager.plasma6.enable = true;
+      services.displayManager.sddm.enable = true;
+    };
+
+    kde-gaming.configuration = {
+      hardware.nvidia = {
+        prime.sync.enable = lib.mkForce true;
+        prime.offload = {
+          enable = lib.mkForce false;
+          enableOffloadCmd = lib.mkForce false;
+        };
+      };
+
+      # GNOME
+      services.xserver.displayManager.gdm.enable = lib.mkForce false;
+      services.xserver.desktopManager.gnome.enable = lib.mkForce false;
+
+      # KDE
+      services.desktopManager.plasma6.enable = true;
+      services.displayManager.sddm.enable = true;
+    };
+  };
+}