diff --git a/cowsdl12.c b/cowsdl12.c
new file mode 100644
index 0000000..78174bc
--- /dev/null
+++ b/cowsdl12.c
@@ -0,0 +1,58 @@
+/*
+ * cowsdl12.c: see cowsdl12.h. The game draws on the surface of SDL_SetVideoMode (here a 16-bit RGB565
+ * surface in memory, as the game asks for); each SDL_Flip uploads it to a streaming texture and shows it.
+ * Copyright (C) 2026 FredyGames. Distributed under the GNU GPL version 3 or later, like the game.
+ */
+#include "cowsdl12.h"
+
+#undef SDL_SetColorKey
+
+static SDL_Window *window = NULL;
+static SDL_Renderer *renderer = NULL;
+static SDL_Texture *texture = NULL;
+static SDL_Surface *screen = NULL;
+
+SDL_Surface *cow_SetVideoMode(int width, int height, int bpp, Uint32 flags)
+{
+	(void)bpp; (void)flags;
+	if (window == NULL) {
+		if (SDL_InitSubSystem(SDL_INIT_VIDEO) != 0)
+			return NULL;
+		window = SDL_CreateWindow("Curse of War", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, 0);
+		if (window == NULL)
+			return NULL;
+		renderer = SDL_CreateRenderer(window, -1, 0);
+		if (renderer == NULL)
+			return NULL;
+	}
+	if (texture != NULL)
+		SDL_DestroyTexture(texture);
+	if (screen != NULL)
+		SDL_FreeSurface(screen);
+	SDL_SetWindowSize(window, width, height);
+	texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB565, SDL_TEXTUREACCESS_STREAMING, width, height);
+	screen = SDL_CreateRGBSurfaceWithFormat(0, width, height, 16, SDL_PIXELFORMAT_RGB565);
+	return screen;
+}
+
+int cow_Flip(SDL_Surface *surface)
+{
+	if (surface != screen || texture == NULL)
+		return -1;
+	SDL_UpdateTexture(texture, NULL, screen->pixels, screen->pitch);
+	SDL_RenderClear(renderer);
+	SDL_RenderCopy(renderer, texture, NULL, NULL);
+	SDL_RenderPresent(renderer);
+	return 0;
+}
+
+/* Converts to the format of the screen; the color key (if any) goes along. */
+SDL_Surface *cow_DisplayFormat(SDL_Surface *surface)
+{
+	return SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_RGB565, 0);
+}
+
+int cow_SetColorKey(SDL_Surface *surface, Uint32 flag, Uint32 key)
+{
+	return SDL_SetColorKey(surface, (flag & SDL_SRCCOLORKEY) ? SDL_TRUE : SDL_FALSE, key);
+}
diff --git a/cowsdl12.h b/cowsdl12.h
new file mode 100644
index 0000000..736e3f5
--- /dev/null
+++ b/cowsdl12.h
@@ -0,0 +1,32 @@
+/*
+ * cowsdl12.h: the part of the SDL 1.2 API that Curse of War uses, on top of SDL 2, for the fredygames.com
+ * browser build (Emscripten). Included before every source file (-include). Written for that build.
+ * Copyright (C) 2026 FredyGames. Distributed under the GNU GPL version 3 or later, like the game.
+ */
+#ifndef COWSDL12_H
+#define COWSDL12_H
+
+#include <SDL.h>
+#include <emscripten.h>
+
+#define SDL_SWSURFACE 0x00000000
+#define SDL_DOUBLEBUF 0x40000000
+#define SDL_SRCCOLORKEY 0x00001000
+#define SDL_RLEACCEL 0x00004000
+
+SDL_Surface *cow_SetVideoMode(int width, int height, int bpp, Uint32 flags);
+int cow_Flip(SDL_Surface *screen);
+SDL_Surface *cow_DisplayFormat(SDL_Surface *surface);
+int cow_SetColorKey(SDL_Surface *surface, Uint32 flag, Uint32 key);
+
+#define SDL_SetVideoMode cow_SetVideoMode
+#define SDL_Flip cow_Flip
+#define SDL_DisplayFormat cow_DisplayFormat
+#define SDL_SetColorKey cow_SetColorKey
+#define SDL_EnableUNICODE(on) (0)
+#define SDL_EnableKeyRepeat(delay, interval) (0)
+/* The main loop waits for the next tick with SDL_Delay: here that hands the page back to the browser (Asyncify). */
+#undef SDL_Delay
+#define SDL_Delay(ms) emscripten_sleep(ms)
+
+#endif
diff --git a/main-common.c b/main-common.c
index f1f2fb7..543bb7c 100644
--- a/main-common.c
+++ b/main-common.c
@@ -75,14 +75,6 @@ void print_help() {
     "\tSpecify a random seed (unsigned integer) for map generation.\n\n"
     "-T\n"
     "\tShow the timeline.\n\n"
-    "-E [1|2| ... L]\n"
-    "\tStart a server for not more than L clients.\n\n"
-    "-e port\n"
-    "\tServer's port (19140 is default).\n\n"
-    "-C IP\n"
-    "\tStart a client and connect to the provided server's IP-address.\n\n"
-    "-c port\n"
-    "\tClients's port (19150 is default).\n\n"
     "-v\n"
     "\tDisplay the version number\n\n"
     "-h\n"
@@ -163,7 +155,7 @@ int get_options(int argc, char *argv[], struct basic_options *op, struct multi_o
 #ifndef NOGETOPT
   opterr = 0;
   int c;
-  while ((c = getopt (argc, argv, "hvrTW:H:i:l:q:d:s:R:S:E:e:C:c:")) != -1){
+  while ((c = getopt (argc, argv, "hvrTW:H:i:l:q:d:s:R:S:")) != -1){
     switch(c){
       case 'r': op->keep_random_flag = 1; break;
       case 'T': op->timeline_flag = 1; break;
@@ -252,31 +244,6 @@ int get_options(int argc, char *argv[], struct basic_options *op, struct multi_o
                 }
                 break;
 
-                /* multiplayer-related options */
-      case 'E': { char* endptr = NULL;
-                  mop->clients_num = strtol(optarg, &endptr, 10);
-                  if (*endptr != '\0') {
-                    print_help();
-                    return 1;
-                  }
-                  mop->multiplayer_flag = 1;
-                  mop->server_flag = 1; 
-                }
-                break;
-      case 'e':
-                free(mop->val_server_port);
-                mop->val_server_port = strdup(optarg);
-                break;
-      case 'C': 
-                mop->multiplayer_flag = 1;
-                mop->server_flag = 0; 
-                free(mop->val_server_addr);
-                mop->val_server_addr = strdup(optarg);
-                break;
-      case 'c':
-                free(mop->val_client_port);
-                mop->val_client_port = strdup(optarg);
-                break;
       case 'v':
           printf("%s\n", VERSION);
           return 1;
diff --git a/main-sdl.c b/main-sdl.c
index 079df17..84e30db 100644
--- a/main-sdl.c
+++ b/main-sdl.c
@@ -33,13 +33,6 @@
 #include "main-common.h"
 #include "path.h"
 
-/* no networking in Windows */
-#ifndef WIN32
-#include <fcntl.h>
-#include "messaging.h"
-#include "client.h"
-#include "server.h"
-#endif
 
 /* delay in milliseconds */
 #define TIME_DELAY 10
@@ -75,20 +68,21 @@ void run(struct state *st, struct ui *ui,
       while (!finished && SDL_PollEvent(&event)){
         switch (event.type){
           case SDL_KEYDOWN:
+            /* SDL 2 has no keysym.unicode: arrows come from the key press, letters from SDL_TEXTINPUT. */
             c = '\0';
             switch (event.key.keysym.sym) {
               case SDLK_LEFT: c = 'h'; break;
               case SDLK_RIGHT: c = 'l'; break;
               case SDLK_UP: c = 'k'; break;
               case SDLK_DOWN: c = 'j'; break;
-              case SDLK_q: c = 'q'; break;
-              case SDLK_SPACE: c = ' '; break;
-              default:
-                if ( (event.key.keysym.unicode & 0xFF80) == 0 ) {
-                  c = event.key.keysym.unicode & 0x7F;
-                }
+              default: break;
             }
-            finished = singleplayer_process_input(st, ui, c);
+            if (c != '\0') finished = singleplayer_process_input(st, ui, c);
+            break;
+          case SDL_TEXTINPUT:
+            c = event.text.text[0];
+            if (c != '\0' && (c & 0x80) == 0)
+              finished = singleplayer_process_input(st, ui, c);
             break;
         }
       }
@@ -110,122 +104,6 @@ void run(struct state *st, struct ui *ui,
   }
 }
 
-#ifndef WIN32
-/* Client version */
-void run_client(struct state *st, struct ui *ui, 
-    SDL_Surface *screen, SDL_Surface *tileset, SDL_Surface *typeface, SDL_Surface *uisurf,
-    char *s_server_addr, char *s_server_port, char *s_client_port){
-  /* tile variation */
-  int tile_variant[MAX_WIDTH][MAX_HEIGHT];
-  int pop_variant[MAX_WIDTH][MAX_HEIGHT];
-  int i, j;
-  for (i=0; i<MAX_WIDTH; ++i)
-    for (j=0; j<MAX_HEIGHT; ++j) {
-      tile_variant[i][j] = rand();
-      pop_variant[i][j] = rand();
-    }
-
-  /* Init Networking */
-  int sfd; /* file descriptor of the socket */
-  int ret_code; /* code returned by a function */
-  struct addrinfo srv_addr;
-  if ((ret_code = client_init_session 
-        (&sfd, s_client_port, &srv_addr, s_server_addr, s_server_port)) != 0) {
-    perror("Failed to initialize networking");
-    return;
-  }
-  fcntl(sfd, F_SETFL, O_NONBLOCK);
-  /* */
-
-  /* Starting the main loop */
-  int finished = 0;
-  SDL_Event event;
-  int previous_time = SDL_GetTicks();
-
-  int k = 0;
-  int initialized = 0;
-  st->time = 0;
-  while (!finished){
-
-    int time = SDL_GetTicks();
-
-    if (time - previous_time >= TIME_DELAY) {
-
-      previous_time = previous_time + TIME_DELAY;
-      k++;
-      if (k>=1600) k=0;
-
-      char c = '\0';
-      while (!finished && SDL_PollEvent(&event)){
-        switch (event.type){
-          case SDL_KEYDOWN:
-            c = '\0';
-            switch (event.key.keysym.sym) {
-              case SDLK_LEFT: c = 'h'; break;
-              case SDLK_RIGHT: c = 'l'; break;
-              case SDLK_UP: c = 'k'; break;
-              case SDLK_DOWN: c = 'j'; break;
-              case SDLK_q: c = 'q'; break;
-              case SDLK_SPACE: c = ' '; break;
-              default:
-                if ( (event.key.keysym.unicode & 0xFF80) == 0 ) {
-                  c = event.key.keysym.unicode & 0x7F;
-                }
-            }
-            /* finished = singleplayer_process_input(st, ui, c); */
-            finished = client_process_input (st, ui, c, sfd, &srv_addr);
-            /* */
-            break;
-        }
-      }
-      
-      /* Send Keep Alive & receive packets */
-      if (k%50 == 0) 
-        send_msg_c (sfd, &srv_addr, MSG_C_IS_ALIVE, 0, 0, 0);
-      
-      int msg = client_receive_msg_s (sfd, st);
-      if (msg == MSG_S_STATE && initialized != 1) {
-        initialized = 1;
-        ui_init(st, ui);
-      
-        /* reset screen */
-        int screen_width = (ui->xlength + 2) * TILE_WIDTH;
-        int screen_height = (st->grid.height + 3) * TILE_HEIGHT + TYPE_HEIGHT*5;
-        screen_width = MAX (screen_width, TILE_WIDTH + 75*TYPE_WIDTH + TILE_WIDTH);
-        SDL_FreeSurface(screen);
-        screen = SDL_SetVideoMode(screen_width, screen_height, 16, SDL_DOUBLEBUF);
-        if (screen == NULL) {
-          fprintf(stderr, "Unable to set video mode: %s\n", SDL_GetError());
-          exit(1);
-        }
-        /* */
-      }
-      /* */
-      
-      /* no simulation in the client */
-      /*
-      int slowdown = game_slowdown(st->speed);
-      if (k % slowdown == 0 && st->speed != sp_pause) { 
-        kings_move(st);
-        simulate(st);
-      }
-      */
-
-      if (initialized) {
-        if (k % 5 == 0) {
-          output_sdl(tileset, typeface, uisurf, screen, st, ui, tile_variant, pop_variant, k);
-          SDL_Flip(screen);
-        }
-      }
-
-    }
-    else{
-      SDL_Delay(TIME_DELAY/2);
-    }
-  }
-}
-#endif
-
 int main(int argc, char *argv[]) {
 
   srand(time(NULL));
@@ -285,30 +163,15 @@ int main(int argc, char *argv[]) {
   if ( load_image(filename, &uisurf) != 0 ) return 1;
   free(filename);
 
-#ifdef WIN32 
   /* Run the game */
   run(&st, &ui, screen, tileset, typeface, uisurf);
-#else
-  if (!mop.multiplayer_flag) {
-    /* Run the game */
-    run(&st, &ui, screen, tileset, typeface, uisurf);
-  }
-  else {
-    if (mop.server_flag)  {
-      fprintf(stderr, "\nPlease, run the ncurses executable to start a server.\n\n");
-      exit(1);
-    }
-    else run_client(&st, &ui, screen, tileset, typeface, uisurf, mop.val_server_addr, mop.val_server_port, mop.val_client_port);
-  }
-#endif
 
   /* Finalize */
   SDL_FreeSurface(tileset);
   SDL_FreeSurface(typeface);
   SDL_FreeSurface(uisurf);
   
-  if (!mop.multiplayer_flag || mop.server_flag)
-    printf ("Random seed was %i\n", st.map_seed);
+  printf ("Random seed was %i\n", st.map_seed);
 
   destroy_search_paths(path);
   free(mop.val_client_port);