diff --git a/.gitignore b/.gitignore
index 8500a4a..81b0c56 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
-/.cache
-/dev/
-/build/
-/games/*
-!/games/.gitkeep
+dev
+build/
+games/*
+!games/.gitkeep
 
diff --git a/build.sh b/build.sh
deleted file mode 100755
index f06b433..0000000
--- a/build.sh
+++ /dev/null
@@ -1,61 +0,0 @@
-#!/bin/sh
-
-echo General packaging
-rm -r build
-mkdir build
-cd build
-
-mv ../dev ../deva
-lua ~/proj/luapack/main.lua ../luapack.lua
-mv ../deva ../dev
-
-#cp -r lib skins ll-min.lua build/
-
-zip -9 -r ../game.love .
-rm *
-mv ../game.love .
-
-echo Windows packaging
-VER=11.4
-BITS=64
-ARCH=x86_64
-if [ ! -d ../.cache/love-$VER-win$BITS ]; then
-  mkdir -p ../.cache/love-$VER-win$BITS
-  cd ../.cache
-  wget https://github.com/love2d/love/releases/download/$VER/love-$VER-win$BITS.zip
-  unzip love-$VER-win$BITS.zip
-  cd -
-fi
-mkdir win && cd win
-cp -r ../../.cache/love-$VER-win$BITS/* .
-cat love.exe ../game.love > game.exe
-rm love.exe lovec.exe *.ico *.txt
-zip -r ../win.zip *
-cd ..
-rm -r win
-
-echo Linux packaging
-if [ ! -e ../.cache/love-$VER-$ARCH.AppImage ]; then
-  cd ../.cache
-  wget https://github.com/love2d/love/releases/download/$VER/love-$VER-$ARCH.AppImage
-  chmod a+x love-$VER-$ARCH.AppImage
-  cd -
-fi
-if [ ! -e ../.cache/appimagetool-$ARCH.AppImage ]; then
-  cd ../.cache
-  wget https://github.com/AppImage/AppImageKit/releases/download/13/appimagetool-$ARCH.AppImage
-  chmod a+x appimagetool-$ARCH.AppImage
-  cd -
-fi
-mkdir lin && cd lin
-../../.cache/love-$VER-$ARCH.AppImage --appimage-extract > /dev/null
-cd squashfs-root
-cat ../../game.love >> bin/love
-chmod a+x bin/love
-cd ..
-../../.cache/appimagetool-$ARCH.AppImage squashfs-root ../linux.AppImage > /dev/null
-rm -r squashfs-root
-chmod a+x ../linux.AppImage
-cd ..
-rm -r lin
-
diff --git a/lib/chroot.lua b/lib/chroot.lua
index c1e0061..f0abb42 100644
--- a/lib/chroot.lua
+++ b/lib/chroot.lua
@@ -3,51 +3,33 @@ return function(ll)
 ll.mdir = nil
 ll.mgme = nil
 
-if love.getVersion() >= 12 then
-  function ll._mntdir(dir)
-    return love.filesystem.mountFullPath(dir, '/')
-  end
-  function ll._umntdir(dir)
-    love.filesystem.unmountFullPath(dir)
-  end
-else
-  local ffi = require 'ffi'
-  local liblove = ffi.os == 'Windows'
-    and ffi.load 'love'
-    or ffi.C -- thanks to slime73, Love2D developer :)
-
-  ffi.cdef [[
+local ffi = require 'ffi'
+ffi.cdef [[
   int PHYSFS_mount(const char *, const char *, int);
-  int PHYSFS_unmount(const char *);]]
-
-  -- FIXME: Bug may appear in Linux. Recompile Love2D or use official PPA.
-  function ll._mntdir(dir)
-    return liblove.PHYSFS_mount(dir, '/', 0) ~= 0
-  end
-  function ll._umntdir(dir)
-    liblove.PHYSFS_unmount(dir)
-  end
-end
+  int PHYSFS_unmount(const char *);
+]]
 
 local baseReq = '?.lua;?/init.lua;'
 function ll.mount(gme)
   local mdir = gme.base .. gme.dir
+  ll.mgme = gme
 
-  love.filesystem.setRequirePath(
-       mdir .. '/?.lua;'
+  love.filesystem.setRequirePath(''
+    .. mdir .. '/?.lua;'
     .. mdir .. '/?/init.lua;'
     .. baseReq
   )
-  if ll._mntdir(mdir)
-  then ll.mdir, ll.mgme = mdir, gme
-  else error('Cannot mount '..mdir)
+  -- FIXME: Bug may appear in Linux. Recompile Love2D or use official PPA.
+  if ffi.C.PHYSFS_mount(mdir, '/', 0) == 0
+  then error('Cannot mount '..mdir)
     love.filesystem.setRequirePath(baseReq)
+  else ll.mdir = mdir
   end
 end
 
 function ll.umount()
   if ll.mdir ~= nil then
-    ll._umntdir(ll.mdir)
+    ffi.C.PHYSFS_unmount(ll.mdir)
     ll.mdir = nil
   end
 end
diff --git a/lib/keyb.lua b/lib/keyb.lua
index 84b2e52..e3c0719 100644
--- a/lib/keyb.lua
+++ b/lib/keyb.lua
@@ -1,14 +1,13 @@
 return function(ll)
 
 local mx, my, mb, mpb
-local dir, sc1, sc2, sclm1, sclm2
+local dir, sc1, sc2, sclm
 
--- d     - direction (h, v, x, y, *)
--- c1    - coordinate before card        (mouse) (be left or top)
--- c2    - coordinate after  card        (mouse) (be right or bottom)
--- clim1 - other coordinate limit before (mouse) (set -1 to disable)
--- clim2 - other coordinate limit after  (mouse) (set -1 to disable)
-function ll.kbInit(d, c1, c2, clim1, clim2)
+-- d   - direction (h, v, x, y, *)
+-- c1  - coordinate before card (mouse) (be left or top)
+-- c2  - coordinate after  card (mouse) (be right or bottom)
+-- clm - other coordinate limit (mouse) (set -1 to disable)
+function ll.kbInit(d, c1, c2, clim)
   if d == 'h' or d == 'v' or d == '*'
   then dir = d
   elseif d == 'y'
@@ -18,37 +17,19 @@ function ll.kbInit(d, c1, c2, clim1, clim2)
   else error 'Direction must be *, h (x) or v (y)'
   end
 
-  ll.kbSetCC(c1, c2)
-  ll.kbSetOC(clim1, clim2)
-end
-
--- set card coordinate
--- c1    - coordinate before card (mouse) (be left or top)
--- c2    - coordinate after  card (mouse) (be right or bottom)
-function ll.kbSetCC(c1, c2)
   c1, c2 =
     tonumber(c1) or 0,
     tonumber(c2) or 0
-
-  sc1, sc2 =
+  sc1, sc2, sclm =
     math.min(c1, c2),
-    math.max(c1, c2)
-end
-
--- set other coordinate limit
--- clim1 - other coordinate limit before (mouse) (set -1 to disable)
--- clim2 - other coordinate limit after  (mouse) (set -1 to disable)
-function ll.kbSetOC(clim1, clim2)
-  sclm1, sclm2 =
-    tonumber(clim1) or -1,
-    tonumber(clim2) or -1
+    math.max(c1, c2),
+    tonumber(clim) or -1
 end
 
 -- returns: <, >, o, m, nil
 -- ^ and v if dir is *
 function ll.kbGet()
-  assert(dir, 'Call ll.kbInit() before')
-  assert(love, 'Use it with LÖVE engine')
+  assert(dir, 'Call ll.kbInit(dir, coord1, coord2, coordlimit) before')
   mx, my = love.mouse.getPosition()
   mpb = mb
   if love.mouse.isDown(1) then mb = 1
@@ -73,10 +54,9 @@ function ll.kbGet()
   elseif love.keyboard.isDown 'menu'
   then return 'm'
 
-  elseif mb == 0 and mpb == 1 then -- mouse unpressed
+  elseif mb == 0 and mpb == 1 then -- unpressed
     if dir == 'h' then
-    if  (sclm1 < 0 or my  > sclm1)
-    and (sclm2 < 0 or my <= sclm2) then
+    if sclm < 0 or my <= sclm then
       if mx <= sc1
       then return '<'
       elseif mx >= sc2
@@ -85,8 +65,7 @@ function ll.kbGet()
       end
     end
     else
-    if  (sclm1 < 0 or mx  > sclm1)
-    and (sclm2 < 0 or mx <= sclm2) then
+    if sclm < 0 or mx <= sclm then
       if my <= sc1
       then return '<'
       elseif my >= sc2
diff --git a/lib/main.lua b/lib/main.lua
index f119d65..dee7506 100644
--- a/lib/main.lua
+++ b/lib/main.lua
@@ -4,33 +4,24 @@ ll.cfg = {
   root = 'games/',
 }
 
-require 'lib.fs'       (ll)
-require 'lib.game'     (ll)
-if love then
-  require 'lib.chroot' (ll)
-  -- TODO: CLI interface?
-  require 'lib.load'   (ll)
-end
-require 'lib.keyb'     (ll) -- except ll.kbGet()
+require 'lib.fs'     (ll)
+require 'lib.game'   (ll)
+require 'lib.chroot' (ll)
+require 'lib.load'   (ll)
+require 'lib.keyb'   (ll)
 
 function ll.home()
-  if not love then return end
   ll.umount()
   love.event.push('quit', 'restart')
 end
 
 ll.dt = false
 function ll.devtools()
-  if not love then return end
-
   if not ll.dt then
     ll.dt = true
     __LL = ll
     pcall(function() require 'dev.tools' end)
-    return true
   end
-  return false
 end
 
 return ll
-
diff --git a/ll-min.lua b/ll-min.lua
index a47f01a..eafd105 100644
--- a/ll-min.lua
+++ b/ll-min.lua
@@ -1,35 +1,13 @@
 -- Minimal Love Loader API
--- Version 3.0
+-- Version 2.1
 -- (c) Er2 2022 <er2@dismail.de>
 -- Zlib License
 
 if not llUsed then
 
 COLDIV = love.getVersion() == 0 and 1 or 255
-if love.system
-then MOBILE = love.system.getOS() == 'Android'
+MOBILE = love.system.getOS() == 'Android'
   or love.system.getOS() == 'iOS'
-else MOBILE = false
-end
-
-function llHome()
-  love.event.push('quit', 'restart')
-end
-
-if love.getVersion() >= 12 then
-  function love.graphics.stencil(fn)
-    love.graphics.setColorMask(false)
-    love.graphics.setStencilMode('replace', 'always', 1)
-    fn()
-    love.graphics.setColorMask(true)
-  end
-  function love.graphics.setStencilTest(cmp, val)
-    if cmp
-    then love.graphics.setStencilMode('keep', cmp, val)
-    else love.graphics.setStencilMode()
-    end
-  end
-end
 
 if MOBILE
 then love.window.setFullscreen(true)
@@ -44,6 +22,9 @@ function love.resize(x, y)
 end
 love.resize(love.graphics.getDimensions())
 
+function llHome()
+  love.event.push('quit')
+end
 function love.event.quit()
   llHome()
 end
diff --git a/luapack.lua b/luapack.lua
index b4787e4..ab4dec7 100644
--- a/luapack.lua
+++ b/luapack.lua
@@ -1,9 +1,6 @@
 return {
-  entry = {
-    'main.lua',
-    'll-min.lua',
-  },
-  output = 'build/$name.lua',
+  entry = 'main.lua',
+  output = 'build/main.lua',
   plug = {
     require 'plug.minify' {
       extGlob = {
diff --git a/main.lua b/main.lua
index 6364fcd..dd4e61c 100644
--- a/main.lua
+++ b/main.lua
@@ -1,10 +1,7 @@
 local ll = require 'lib.main'
 error = love.errhand or love.errorhandler
 
-ll.skin = require 'skins.nx' (ll)
-
 function splash()
-  if not ll.mgme then return end
   love.graphics.setColor(255, 255, 255, 100 / COLDIV)
   if ll.mgme.screens and ll.mgme.screens[1] then
     local img = love.graphics.newImage(ll.mgme.screens[1])
@@ -14,26 +11,16 @@ function splash()
   love.graphics.print('Loading '..ll.mgme.name, W / 2, H / 2)
 end
 
+ll.skin = require 'skins.psp' (ll)
+
 require 'll-min'
 llUsed = true
 
-if love.getVersion() >= 12 then
-  function llHome()
-    ll.umount()
-    love.event.restart()
-  end
-else
-  function llHome()
-    ll.umount()
-    love.event.push('quit', 'restart')
-  end
-end
-if love.getVersion() >= 11
+if love.errorhandler
 then love.errorhandler = error
 else love.errhand = error
 end
 
-local dt = love.timer and love.timer.step() or 0
 local brk = false
 while not brk and not ll.mdir do
   -- event handling
@@ -44,29 +31,12 @@ while not brk and not ll.mdir do
     then ll.umount()
       love.event.push('quit')
       brk = true; break
-    elseif n == 'filedropped' then
-      love.graphics.clear()
-      local x, y, g = 32, 32, 16
-      local w, h = 84, 96
-      love.graphics.rectangle('line', x, y, w, h, w / 8)
-      love.graphics.line(x + w / 1.5, y, x + w, y + h / 3)
-      if ll.skin.addGame then
-        a:open 'r'
-        ll.skin.addGame(a:getFilename(), a:read(), x + w + g, y)
-      else love.graphics.print('This skin does not support file dropping', x + w + g, y)
-      end
-      love.graphics.present()
-      love.timer.sleep(2)
     end
     love.handlers[n](a,b,c)
   end
 
   -- update and drawing
-  if love.timer then
-    love.timer.step()
-    dt = love.timer.getDelta()
-  end
-  ll.skin.update(dt)
+  ll.skin.update()
   love.graphics.origin()
   love.graphics.clear(0, 0, 0)
   ll.skin.draw()
diff --git a/skins/base.lua b/skins/base.lua
index a772dbe..ca31268 100644
--- a/skins/base.lua
+++ b/skins/base.lua
@@ -86,11 +86,6 @@ local function ccp()
          return ''
     else return 'Not found'
     end
-  elseif cmd == 'devtools' then
-    if ll.devtools()
-    then return 'Enabled'
-    else return 'Already enabled'
-    end
   else return 'Unknown command "'.. cmd .. '"'
   end
 end
@@ -122,7 +117,6 @@ local function update()
   end
 end
 
-local oy = 0
 local utf8 = require 'utf8'
 local function draw()
   love.graphics.setColor(255, 255, 255)
@@ -138,18 +132,15 @@ local function draw()
     then x = x + 8 - (x % 8)
     elseif chr == '\v'
     then y = y + 1
-    else love.graphics.print(chr, x * cw, y * ch - oy)
+    else love.graphics.print(chr, x * cw, y * ch)
       if x >= ctw
       then x, y = x - ctw, y + 1
       else x = x + 1
       end
     end
   end
-  if y * ch - oy >= H
-  then oy = oy + H / 4
-  end
   if os.time() % 2 == 0
-  then love.graphics.rectangle('fill', x * cw, y * ch - oy, cw, ch)
+  then love.graphics.rectangle('fill', x * cw, y * ch, cw, ch)
   end
 end
 
diff --git a/skins/gui.lua b/skins/gui.lua
index f817d66..fdb2708 100644
--- a/skins/gui.lua
+++ b/skins/gui.lua
@@ -1,10 +1,9 @@
 return function(ll)
 
-ll.cfg.pcht = ll.cfg.pcht or 60 * 10
+ll.cfg.pcht = ll.cfg.pcht or 60 * 5
 
 local pikchv, pikcha = 0, 0
 local pikchao = math.floor(1 / ll.cfg.pcht * 2 * 255 + 0.5)
-local bg = 0
 
 local cx, cy, cw, ch
 local f, bf
@@ -26,7 +25,7 @@ function resize()
   ll.kbInit('h', cx, cx + cw)
 end
 
-local function update(dt)
+local function update()
   local sdi = ll.kbGet()
 
   if cdir ~= sdi then
@@ -47,8 +46,8 @@ local function update(dt)
     if sel > #ll.games then sel = 1 end
   end
 
-  pikchv = pikchv + dt
-  if pikchv >= ll.cfg.pcht / 100 then
+  pikchv = pikchv + 1
+  if pikchv >= ll.cfg.pcht then
     pikchv = 0
     pikcha = 0
     for _, v in pairs(ll.games) do
@@ -60,12 +59,11 @@ local function update(dt)
         end
       end
     end
-  else pikcha = math.min(255, pikcha + pikchao * 100 * dt)
+  else pikcha = math.min(255, pikcha + pikchao)
   end
-
-  bg = (bg + dt) % 6.28
 end
 
+local tm = 0
 local function draw()
   love.graphics.setColor(0 / COLDIV, 50 / COLDIV, 75 / COLDIV)
   love.graphics.rectangle('fill', 0, 0, W, H)
@@ -76,7 +74,8 @@ local function draw()
   local tw, th = bf:getWidth(t), bf:getHeight(t)
   love.graphics.print(t, W - tw - 8, H - th)
 
-  local c, pc, ps = bg, math.cos(bg), math.sin(bg)
+  tm = (tm + 0.02) % 6.28
+  local c, pc, ps = tm, math.cos(tm), math.sin(tm)
   local oy = H / 2
   for x = 0, W + 8, 8 do
     c = c + 0.1
diff --git a/skins/nx.lua b/skins/nx.lua
deleted file mode 100644
index 1bbf750..0000000
--- a/skins/nx.lua
+++ /dev/null
@@ -1,71 +0,0 @@
-return function(ll)
-
--- Nintendo NX (AKA Switch) UI
-
-local r
-
-os.setlocale('', 'time')
-
-function resize()
-  r = math.min(W, H) / 30
-
-  f = love.graphics.setNewFont(math.min(W, H) / 30)
-  bf = love.graphics.newFont(math.min(W, H) / 20)
-
-  --ll.kbInit('h', H / 2 - ch, H / 2 + ch + cg, 0, cx + cw * 2)
-end
-
-local function update(dt)
-end
-
-local function roundRect(m, x, y, w, h, r)
-  if w < 1 or h < 1 then return end
-
-  love.graphics.rectangle(m, x, y, w, h, r)
-
-  if m == 'fill'
-  then roundRect('line', x, y, w, h, r)
-  end
-end
-
-local function draw()
-  love.graphics.setColor(0 / COLDIV, 50 / COLDIV, 75 / COLDIV)
-  love.graphics.rectangle('fill', 0, 0, W, H)
-  love.graphics.setColor(255, 255, 255)
-  -- Indicators
-  love.graphics.push()
-  love.graphics.translate(W - W / 16, H / 16)
-  love.graphics.setLineWidth(r / 8)
-  local pst, pper = love.system.getPowerInfo()
-  if pst ~= 'nobattery' then
-    pper = pper or 0
-    if pst == 'charging'
-    then pper = os.time() % 5 / 4 * 100
-    end
-    roundRect('line', -r * 2.2, 0, r * 2, r * 1.2, r / 4)
-    roundRect('fill', -r / 6, r * 0.3, r / 4, r / 2, r / 16)
-    roundRect('fill', -r * 1.95, r * 0.3, r * 1.5 * pper / 100, r * 0.6, r / 16)
-    love.graphics.translate(-r * 2.8, 0)
-  end
-  local time = os.date('%X'):gsub('^(%d+.+%d+).+%d+', '%1')
-  local w = f:getWidth(time)
-  love.graphics.print(time, -w, -2)
-  love.graphics.pop()
-end
-
-local function addGame(file, cont, x, y)
-  local msg, id = ll.addGame(file, cont)
-  love.graphics.print(msg, x, y)
-  if id then
-    sel = id
-  end
-end
-
-return {
-  update = update,
-  draw = draw,
-  addGame = addGame,
-}
-
-end
-
diff --git a/skins/psp.lua b/skins/psp.lua
index 5a766c1..2427148 100644
--- a/skins/psp.lua
+++ b/skins/psp.lua
@@ -10,7 +10,7 @@ local css, rcss = 2, 0
 
 local f, bf
 
-ll.cfg.pcht = ll.cfg.pcht or 60 * 10
+ll.cfg.pcht = ll.cfg.pcht or 60 * 5
 
 local pikchv, pikcha = 0, 0
 local pikchao = math.floor(1 / ll.cfg.pcht * 2 * 255 + 0.5)
@@ -18,8 +18,6 @@ local pikchao = math.floor(1 / ll.cfg.pcht * 2 * 255 + 0.5)
 local logger = ''
 local chc = '<>><m><'
 
-os.setlocale('', 'time')
-
 function resize()
   r = math.min(W, H) / 30
 
@@ -32,14 +30,16 @@ function resize()
   f = love.graphics.setNewFont(math.min(W, H) / 30)
   bf = love.graphics.newFont(math.min(W, H) / 20)
 
-  ll.kbInit('v', H / 2 - ch, H / 2 + ch + cg, 0, cx + cw * 2)
+  ll.kbInit('v', H / 2 - ch, H / 2 + ch + cg, cx + cw * 2)
 end
 
+love.window.setMode(800, 600, {resizable = true})
+
 local sdir
-local function update(dt)
+local function update()
   local ty = H / 2 - (ch + cg) * sel
-  cy   = cy  + (ty - cy) *  5 * dt
-  css  = css + (2 - css) * 15 * dt
+  cy   = cy  + (ty - cy) * 0.1
+  css  = css + (2 - css) * 0.2
   rcss = 2 - css + 1
 
   local sdi = ll.kbGet()
@@ -68,9 +68,10 @@ local function update(dt)
     if sel > #ll.games then sel = 1 end
   end
 
-  pikchv = pikchv + dt
-  if pikchv >= ll.cfg.pcht / 100 then
-    pikchv, pikcha = 0, 0
+  pikchv = pikchv + 1
+  if pikchv >= ll.cfg.pcht then
+    pikchv = 0
+    pikcha = 0
     for _, v in pairs(ll.games) do
       if v.dat.scr then
         v.scrprv = v.scrcur
@@ -80,7 +81,7 @@ local function update(dt)
         end
       end
     end
-  else pikcha = math.min(255, pikcha + pikchao * 100 * dt)
+  else pikcha = math.min(255, pikcha + pikchao)
   end
 end
 
@@ -95,16 +96,6 @@ local function scrCard(gme, x, y, w, h, a)
   love.graphics.rectangle('fill', x, y, w, h)
 end
 
-local function roundRect(m, x, y, w, h, r)
-  if w < 1 or h < 1 then return end
-
-  love.graphics.rectangle(m, x, y, w, h, r)
-
-  if m == 'fill'
-  then roundRect('line', x, y, w, h, r)
-  end
-end
-
 local function draw()
   love.graphics.setColor(0 / COLDIV, 50 / COLDIV, 75 / COLDIV)
   love.graphics.rectangle('fill', 0, 0, W, H)
@@ -118,28 +109,6 @@ local function draw()
     sel = #ll.games
   end
   love.graphics.setFont(f)
-
-  -- battery indicators
-  love.graphics.setColor(255, 255, 255)
-  love.graphics.push()
-  love.graphics.translate(W - r * 1.5, r)
-  love.graphics.setLineWidth(r / 8)
-  local pst, pper = love.system.getPowerInfo()
-  if pst ~= 'nobattery' then
-    pper = pper or 0
-    if pst == 'charging'
-    then pper = os.time() % 5 / 4 * 100
-    end
-    roundRect('line', -r * 2.2, 0, r * 2, r * 1.2, r / 4)
-    roundRect('fill', -r / 6, r * 0.3, r / 4, r / 2, r / 16)
-    roundRect('fill', -r * 1.95, r * 0.3, r * 1.5 * pper / 100, r * 0.6, r / 16)
-    love.graphics.translate(-r * 2.8, 0)
-  end
-  local time = os.date('%X'):gsub('^(%d+.+%d+).+%d+', '%1')
-  local w = f:getWidth(time)
-  love.graphics.print(time, -w, -2)
-  love.graphics.pop()
-
   local oy = 0
   for k, v in pairs(ll.games) do
     local x, w, h, g = cx, cw, ch, cg
@@ -182,18 +151,9 @@ local function draw()
   end
 end
 
-local function addGame(file, cont, x, y)
-  local msg, id = ll.addGame(file, cont)
-  love.graphics.print(msg, x, y)
-  if id then
-    sel = id
-  end
-end
-
 return {
   update = update,
   draw = draw,
-  addGame = addGame,
 }
 
 end