diff --git a/mini.cpp b/mini.cpp
index b7881aa..d179910 100644
--- a/mini.cpp
+++ b/mini.cpp
@@ -18,6 +18,7 @@ char        window_title[256];
 uint16_t    screen_width = 160;
 uint16_t    screen_height = 120;
 uint8_t     screen_zoom = 4;
+bool        screen_fullscreen = false;
 uint8_t     show_cursor = SDL_ENABLE;
 
 surface_t   surfaces[10];
@@ -184,6 +185,21 @@ void setmap(uint8_t surface) {
     map_surface = &surfaces[surface];
 }
 
+void createDisplay() {
+    mini_win = SDL_CreateWindow(window_title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, screen_width*screen_zoom, screen_height*screen_zoom, screen_fullscreen?SDL_WINDOW_FULLSCREEN_DESKTOP:SDL_WINDOW_SHOWN);
+    mini_ren = SDL_CreateRenderer(mini_win, -1, 0);
+    //SDL_CreateWindowAndRenderer(512,512,0,&mini_win,&mini_ren);
+    SDL_RenderSetLogicalSize(mini_ren, screen_width, screen_height);
+    SDL_ShowCursor(show_cursor);
+    mini_bak = SDL_CreateTexture(mini_ren, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, screen_width, screen_height);
+}
+
+void destroyDisplay() {
+    SDL_DestroyTexture(mini_bak);
+    SDL_DestroyRenderer(mini_ren);
+    SDL_DestroyWindow(mini_win);
+}
+
 int main(int argc,char*argv[]){
     
     while (!should_quit) {
@@ -201,12 +217,7 @@ int main(int argc,char*argv[]){
         setdest(newsurf(screen_width, screen_height));
 
         SDL_Init(SDL_INIT_EVERYTHING);
-        mini_win = SDL_CreateWindow(window_title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, screen_width*screen_zoom, screen_height*screen_zoom, SDL_WINDOW_SHOWN);
-        mini_ren = SDL_CreateRenderer(mini_win, -1, 0);
-        //SDL_CreateWindowAndRenderer(512,512,0,&mini_win,&mini_ren);
-        SDL_RenderSetLogicalSize(mini_ren, screen_width, screen_height);
-        SDL_ShowCursor(show_cursor);
-        mini_bak = SDL_CreateTexture(mini_ren, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, screen_width, screen_height);
+        createDisplay();
 
         Mix_Init(MIX_INIT_OGG);
 
@@ -227,6 +238,15 @@ int main(int argc,char*argv[]){
             while(SDL_PollEvent(&mini_eve)) {
                 if (mini_eve.type == SDL_QUIT) { should_exit=true; should_quit=true; break; }
                 if (mini_eve.type == SDL_KEYDOWN) {
+                    if (mini_eve.key.keysym.scancode == SDL_SCANCODE_F2) {
+                        screen_zoom+=2; if (screen_zoom>=10) screen_zoom=2;
+                        destroyDisplay();
+                        createDisplay();
+                    } else if (mini_eve.key.keysym.scancode == SDL_SCANCODE_F3) {
+                        screen_fullscreen = !screen_fullscreen;
+                        destroyDisplay();
+                        createDisplay();
+                    }
 #ifdef DEBUG
                     if (mini_eve.key.keysym.scancode == SDL_SCANCODE_F1) {
                         if (lua_is_playing()) {
@@ -274,9 +294,7 @@ int main(int argc,char*argv[]){
         Mix_Quit();
 
         for (int i=0;i<10;++i) freesurf(i);
-        SDL_DestroyTexture(mini_bak);
-        SDL_DestroyRenderer(mini_ren);
-        SDL_DestroyWindow(mini_win);
+        destroyDisplay();
         SDL_Quit();
     }