diff --git a/demos/lorenrunner.lua b/demos/lorenrunner.lua
new file mode 100644
index 0000000..aed5b7d
--- /dev/null
+++ b/demos/lorenrunner.lua
@@ -0,0 +1,114 @@
+score=0
+lives=5
+level=1
+tresors=0
+player = {x=0,y=0,oldtile=32,falling=false}
+malos = {
+    {x=0,y=0},
+    {x=0,y=0},
+    {x=0,y=0}
+}
+eixida={x=0,y=0}
+
+function init()
+    mode(2)
+    setchar(33,223,223,223,0,253,253,253,0)
+    setchar(34,255,255,255,255,255,255,255,0)
+    setchar(35,195,255,195,195,195,255,195,195)
+    setchar(36,195,243,195,195,195,207,195,195)
+    setchar(37,0,255,0,0,0,0,0,0)
+    setchar(38,0,0,0,126,66,66,126,0)
+
+    filein("level1.bin",0,600)
+
+    tresors=0
+    player.oldtile=32
+    local m=1
+    for i=0,299 do
+        if peek(i) == 248 then
+            poke(i,32)
+            player.x=i%20
+            player.y=flr(i/20)
+        elseif peek(i) == 249 then
+            poke(i,32)
+            poke(300+i, 0x0f)
+            malos[m].x=i%20 
+            malos[m].y=flr(i/20)
+        elseif peek(i) == 36 then
+            poke(i,32)
+            poke(300+i, 0x0f)
+            eixida.x=i%20 
+            eixida.y=flr(i/20)
+        elseif peek(i) == 38 then
+            tresors=tresors+1
+        end
+    end
+
+    ink(COLOR_YELLOW) print("000000",7,14)
+
+    -- anem a contar els tresors que hi ha, per a saber quan es deu activar l'escala de eixida
+end
+
+function update()
+    if not player.falling then
+        if btnp(KEY_LEFT) and player.x>0 and peek(player.x-1+player.y*20)~=33 then
+            poke(player.x+player.y*20, player.oldtile)
+            player.x=player.x-1
+            player.oldtile = peek(player.x+player.y*20)
+            check_tresors()
+        elseif btnp(KEY_RIGHT) and player.x<19 and peek(player.x+1+player.y*20)~=33 then
+            poke(player.x+player.y*20, player.oldtile)
+            player.x=player.x+1
+            player.oldtile = peek(player.x+player.y*20)
+            check_tresors()
+        elseif btnp(KEY_UP) and player.oldtile==35 then
+            if player.y>0 then 
+                poke(player.x+player.y*20, player.oldtile)
+                player.y=player.y-1
+                player.oldtile = peek(player.x+player.y*20)
+            else
+                -- endgame. Ja vorem, ara que faça el init de nou i au
+                init()
+            end
+        elseif btnp(KEY_DOWN) and (peek(player.x+(player.y+1)*20) == 35 or player.oldtile==37) then
+            poke(player.x+player.y*20, player.oldtile)
+            player.y=player.y+1
+            player.oldtile = peek(player.x+player.y*20)
+        end
+    end
+
+    if cnt()%5 == 0 then
+        if player.oldtile~=37 and (peek(player.x+(player.y+1)*20)==32 or peek(player.x+(player.y+1)*20)==38 or peek(player.x+(player.y+1)*20)==37) then
+            player.falling = true
+            poke(player.x+player.y*20, player.oldtile)
+            player.y=player.y+1
+            player.oldtile = peek(player.x+player.y*20)
+            check_tresors()
+        else
+            player.falling=false
+        end
+    end
+    poke(player.x+player.y*20, 248)
+
+end
+
+function check_tresors()
+    if player.oldtile==38 then
+        player.oldtile=32
+        update_score(100)
+        poke(300+player.x+player.y*20, 0x0f)
+        tresors=tresors-1
+        if tresors==0 then
+            for i=eixida.y,0,-1 do
+                poke(eixida.x+i*20,35)
+            end
+        end
+    end
+end
+
+function update_score(points)
+    score=score+points
+    local str= ""..score
+    while #str < 6 do str = "0"..str end
+    ink(COLOR_YELLOW) print(str,7,14)
+end
\ No newline at end of file
diff --git a/demos/old_sokoban.lua b/demos/old_sokoban.lua
new file mode 100644
index 0000000..de97f3c
--- /dev/null
+++ b/demos/old_sokoban.lua
@@ -0,0 +1,161 @@
+FLOOR = 0
+GOAL = 1
+BOX = 2
+PLAYER = 4
+WALL = 7
+
+function init()
+    mode(2)
+    level=1
+    player={}
+    menu.init()
+end
+
+-- ====================================================================================================
+-- MENU (game state)
+-- ====================================================================================================
+blink=0
+
+menu={
+    init = function()
+        update=menu.update
+    end,
+
+    update = function()
+        color(15,0) cls()
+        ink(1)  print("\x20\x20\x20\x87\x81\x87\x85\x85\x85\x87\x85\x87\x85\x87\x85\x87\x84\x20\x20\x20",0,2)
+        ink(9)  print("\x20\x20\x20\x83\x85\x85\x85\x8D\x81\x85\x85\x87\x84\x8D\x85\x85\x85\x20\x20\x20",0,3)
+        ink(11) print("\x20\x20\x20\x83\x81\x83\x81\x81\x81\x83\x81\x83\x81\x81\x81\x81\x81\x20\x20\x20",0,4)
+        ink(15*flr((blink%60)/30)) print("PRESS SPACE TO PLAY",1,9)
+        blink=blink+1
+
+        if btnp(KEY_SPACE) then
+            level=1
+            game.init()
+        end
+    end
+}
+
+-- ====================================================================================================
+-- GAME (game state)
+-- ====================================================================================================
+game={
+    init = function()
+        update=game.update
+        level.load_from_string("####|# .#|#  ###|#*@  #|#  $ #|#  ###|####")
+    end,
+    
+    update = function()
+        border(0)
+        color(1,0)
+        cls()
+        level.draw()
+    
+        if btnp(KEY_UP) then level.try_move(0,-1)
+        elseif btnp(KEY_DOWN) then level.try_move(0,1)
+        elseif btnp(KEY_LEFT) then level.try_move(-1,0)
+        elseif btnp(KEY_RIGHT) then level.try_move(1,0)
+        end
+    end
+}
+
+-- ====================================================================================================
+-- LOADING (game state)
+-- ====================================================================================================
+loading = {
+    init = function()
+        border(15)
+        update=loading.update
+        wait=120
+    end
+    
+    function inbetween_update()
+        color(15,0)
+        cls()
+        print("LEVEL "..level,6,6)
+        print("GOOD JOB!",4,8)
+        wait=wait-1
+        if wait==0 then
+            level=level+1
+            game_init()
+        end
+    end
+}
+
+function level_load_from_string(str)
+    map={}
+    local pos=0
+    local y,x=1,1
+    local maxx=0
+    map[y] = {}
+    while pos<#str do
+        local chr = ascii(str,pos)
+        if chr == 35 then map[y][x] = WALL end
+        if chr == 64 then player.x,player.y=x,y map[y][x] = FLOOR end
+        if chr == 43 then player.x,player.y=x,y map[y][x] = GOAL end
+        if chr == 36 then map[y][x] = BOX end
+        if chr == 42 then map[y][x] = GOAL+BOX end
+        if chr == 46 then map[y][x] = GOAL end
+        if chr == 32 then map[y][x] = FLOOR end
+        if chr == 124 then
+            y=y+1
+            map[y] = {}
+            if maxx < x then maxx=x end
+            x=0
+        end
+        pos=pos+1
+        x=x+1
+    end
+    ox = flr((20-maxx)/2)
+    oy = flr((15-y)/2)
+end
+
+function level_draw()
+    for y=1,#map do
+        for x=1,#map[y] do
+            if map[y][x] == WALL then color(4,15) print("\127",ox+x-1,oy+y-1)
+            elseif map[y][x] == BOX then color(0,6) print("\016",ox+x-1,oy+y-1)
+            elseif map[y][x] == BOX+GOAL then color(0,4) print("\016",ox+x-1,oy+y-1)
+            elseif map[y][x] == GOAL then color(4,0) print("\144",ox+x-1,oy+y-1)
+            end
+        end
+    end
+    color(15,0) print("\248",ox+player.x-1,oy+player.y-1)
+end
+
+function try_move(x,y)
+    if is_empty(x,y) then
+        move_player(x,y)
+    elseif is_box(x,y) and is_empty(x*2,y*2) then
+        move_box(x,y)
+    end
+end
+
+function is_empty(x,y)
+    return map[player.y+y][player.x+x] < 2
+end
+
+function is_box(x,y)
+    return map[player.y+y][player.x+x] < 4
+end
+
+function move_player(x,y)
+    player.x=player.x+x
+    player.y=player.y+y 
+end
+
+function move_box(x,y)
+    map[player.y+y*2][player.x+x*2] = map[player.y+y*2][player.x+x*2] + BOX
+    map[player.y+y][player.x+x] = map[player.y+y][player.x+x] - BOX
+    move_player(x,y)
+    check_finished()
+end
+
+function check_finished()
+    for y=1,#map do
+        for x=1,#map[y] do
+            if map[y][x] == GOAL then return end
+        end
+    end
+    inbetween_init()
+end