diff --git a/data/paratroopers.ld b/data/paratroopers.ld
index 4ec7365..7217387 100644
--- a/data/paratroopers.ld
+++ b/data/paratroopers.ld
@@ -23,8 +23,7 @@
 
 ParatroopersInvers =
 {
-# TRANSLATORS: Apparently, "Paratroopers" is the name of a computer game.
-  name     = "Paratroopers"
+  name     = "Parachutists"
   description = "the other way around"
   author = "brl"
 
diff --git a/data/summary.ld b/data/summary.ld
index a9af46e..afca718 100644
--- a/data/summary.ld
+++ b/data/summary.ld
@@ -61,11 +61,6 @@ Wachsen = {
   name = "Growing"
   author = "Immi"
 }
-ASCII = {
-  filename = "ascii.ld"
-  name = "ASCII"
-  author = "Immi"
-}
 Tiere = {
   filename = "tiere.ld"
   name = "Tiling Animals"
@@ -111,11 +106,6 @@ Letters = {
   name = "Letters"
   author = "Berni"
 }
-Tetris = {
-  filename = "tetris.ld"
-  name = "Tetris"
-  author = "Berni"
-}
 Memory = {
   filename = "memory.ld"
   name = "Memory"
@@ -371,7 +361,7 @@ ReversiBRL = {
 }
 ParatroopersInvers = {
   filename = "paratroopers.ld"
-  name = "Paratroopers"
+  name = "Parachutists"
   author = "brl"
 }
 Springer = {
@@ -384,11 +374,6 @@ Baggis = {
   name = "Baggis"
   author = "Simon"
 }
-Pacman = {
-  filename = "pacman.ld"
-  name = "Pacman"
-  author = "Simon"
-}
 mfs = {
   filename = "mfs.ld"
   name = "mfs"
@@ -414,7 +399,7 @@ level[all]=
   Baender,	# Introduces neighbours_diagonal
   HexKugeln,	# First level with randomgreys
   Schemen, Bonus,Pfeile,Fische,Theater,Rechnen,
-  Jahreszeiten,Disco,Wohnungen,Baggis,Tetris,
+  Jahreszeiten,Disco,Wohnungen,Baggis,
   Kacheln_Viereck,
   Rollenspiel,  # First level with different numexplodes
   Himmel,	# Introduces mirror=1
@@ -464,7 +449,6 @@ level[main,hard]=
 
 level[game]=
   Springer,
-  Tetris,
   Rollenspiel,Aliens,
   Puzzle,Letters,
   BoniMali2,Dungeon,
@@ -506,7 +490,7 @@ level[nofx,easy]=
 
 level[weird]=
   Schemen,Bonus,Fische,Rechnen,
-  Disco,Baggis,Tetris,
+  Disco,Baggis,
   Rollenspiel,Kolben,Baelle,Aliens,
   Slime,Flechtwerk,
   Explosive,Gold,Zahn,Doors,Bunt,
@@ -517,7 +501,7 @@ level[weird]=
 
 level[weird,hard]=
   Schemen,Bonus,Fische,Rechnen,
-  Disco,Baggis,Tetris,
+  Disco,Baggis,
   Rollenspiel,Kolben,Baelle,Aliens,
   Slime,Flechtwerk,
   Explosive,Gold,Zahn,Doors,Bunt,
@@ -528,7 +512,7 @@ level[weird,hard]=
 
 level[weird,easy]=
   Schemen,Bonus,Fische,Rechnen,
-  Disco,Baggis,Tetris,
+  Disco,Baggis,
   Rollenspiel,Kolben,Baelle,Aliens,
   Slime,Flechtwerk,
   Explosive,Gold,Zahn,Doors,Bunt,
@@ -537,7 +521,7 @@ level[weird,easy]=
   Go,Tennis,
   Walls,Kacheln_azyklisch,Trees2,NoVIPs,Wachsen,GoII
 
-level[contrib]=ASCII,Xtradick,Pressure,mfs,ParatroopersInvers,Ziehlen,Pacman
+level[contrib]=Xtradick,Pressure,mfs,ParatroopersInvers,Ziehlen
 ordered[contrib]=0
 
 globals=globals.ld
diff --git a/src/blatt.cpp b/src/blatt.cpp
index 550efd8..74d8487 100644
--- a/src/blatt.cpp
+++ b/src/blatt.cpp
@@ -460,8 +460,11 @@ void BlattMenu::keyEvent(const SDL_keysym & taste) {
      Art wie Pfeiltasten wirken.
      (Manchmal macht SDL das automatisch; das scheint aber buggy
      zu sein.) */
-  if (t>=SDLK_KP0 && t<=SDLK_KP9)
-    t = keypadersatz[t-SDLK_KP0];
+  /* (In SDL 2 the keypad key 0 comes after 9.) */
+  if (t>=SDLK_KP1 && t<=SDLK_KP9)
+    t = keypadersatz[t-SDLK_KP1+1];
+  else if (t==SDLK_KP0)
+    t = keypadersatz[0];
   
   
 //   /* Keycode normalisieren */
diff --git a/src/cuyointl.h b/src/cuyointl.h
index eb61420..0fca891 100644
--- a/src/cuyointl.h
+++ b/src/cuyointl.h
@@ -39,6 +39,7 @@ Modified 2001,2008-2011 by the cuyo developers
 
   #define _(String) (String)
   #define N_(String) (String)
+  #define ngettext(singular, plural, n) ((n) == 1 ? (singular) : (plural))
 
 #endif
 
diff --git a/src/cysdl12.cpp b/src/cysdl12.cpp
new file mode 100644
index 0000000..4344fbf
--- /dev/null
+++ b/src/cysdl12.cpp
@@ -0,0 +1,118 @@
+/*
+ * cysdl12.cpp: see cysdl12.h. The game draws on the surface of SDL_SetVideoMode (here a 32-bit surface in
+ * memory); SDL_UpdateRect(s) uploads it to a streaming texture and shows it.
+ * Copyright (C) 2026 FredyGames. Distributed under the GNU GPL version 2 or later, like the game.
+ */
+#include "cysdl12.h"
+
+#undef SDL_PollEvent
+#undef SDL_Delay
+
+static SDL_Window * window = NULL;
+static SDL_Renderer * renderer = NULL;
+static SDL_Texture * texture = NULL;
+static SDL_Surface * screen = NULL;
+
+SDL_Surface * cy_SetVideoMode(int width, int height, int bpp, Uint32 flags) {
+  (void) bpp; (void) flags;
+  if (window == NULL) {
+    window = SDL_CreateWindow("Cuyo", 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_RGB888, SDL_TEXTUREACCESS_STREAMING, width, height);
+  screen = SDL_CreateRGBSurfaceWithFormat(0, width, height, 32, SDL_PIXELFORMAT_RGB888);
+  return screen;
+}
+
+SDL_Surface * cy_GetVideoSurface(void) {
+  return screen;
+}
+
+static void present() {
+  if (texture == NULL)
+    return;
+  SDL_UpdateTexture(texture, NULL, screen->pixels, screen->pitch);
+  SDL_RenderClear(renderer);
+  SDL_RenderCopy(renderer, texture, NULL, NULL);
+  SDL_RenderPresent(renderer);
+}
+
+void cy_UpdateRect(SDL_Surface * s, Sint32 x, Sint32 y, Uint32 w, Uint32 h) {
+  (void) s; (void) x; (void) y; (void) w; (void) h;
+  present();
+}
+
+void cy_UpdateRects(SDL_Surface * s, int numrects, SDL_Rect * rects) {
+  (void) s; (void) rects;
+  if (numrects > 0)
+    present();
+}
+
+SDL_Surface * cy_DisplayFormat(SDL_Surface * surface) {
+  return SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_RGB888, 0);
+}
+
+SDL_Surface * cy_DisplayFormatAlpha(SDL_Surface * surface) {
+  return SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_ABGR8888, 0);
+}
+
+/* Only one "video mode": the game then uses its preferred window size. */
+SDL_Rect ** cy_ListModes(SDL_PixelFormat * format, Uint32 flags) {
+  (void) format; (void) flags;
+  static SDL_Rect mode = {0, 0, 656, 496};
+  static SDL_Rect * modes[2] = {&mode, NULL};
+  return modes;
+}
+
+void cy_WM_SetCaption(const char * title, const char * icon) {
+  (void) icon;
+  if (window != NULL && title != NULL)
+    SDL_SetWindowTitle(window, title);
+}
+
+int cy_EnableUNICODE(int enable) {
+  (void) enable;
+  return 0;
+}
+
+/* The character a key press types on a US keyboard (0 for keys that type none). */
+static Uint16 typed(SDL_Keycode sym, Uint16 mod) {
+  if (sym < 32 || sym >= 127)
+    return 0;
+  bool shift = (mod & KMOD_SHIFT) != 0;
+  if (!shift)
+    return sym;
+  if (sym >= 'a' && sym <= 'z')
+    return sym - 'a' + 'A';
+  switch (sym) {
+    case '1': return '!'; case '2': return '@'; case '3': return '#'; case '4': return '$';
+    case '5': return '%'; case '6': return '^'; case '7': return '&'; case '8': return '*';
+    case '9': return '('; case '0': return ')'; case '-': return '_'; case '=': return '+';
+    case '[': return '{'; case ']': return '}'; case '\\': return '|'; case ';': return ':';
+    case '\'': return '"'; case ',': return '<'; case '.': return '>'; case '/': return '?';
+    case '`': return '~';
+  }
+  return sym;
+}
+
+SDL_keysym::SDL_keysym(const SDL_Keysym & k)
+  : scancode(k.scancode), sym(k.sym), mod(k.mod), unicode(typed(k.sym, k.mod)) {}
+
+/* SDL 1.2 had no key repeat unless asked for; SDL 2 always has it. Repeats are dropped here. */
+int cy_PollEvent(SDL_Event * event) {
+  while (SDL_PollEvent(event)) {
+    if (event->type == SDL_KEYDOWN && event->key.repeat)
+      continue;
+    return 1;
+  }
+  return 0;
+}
diff --git a/src/cysdl12.h b/src/cysdl12.h
new file mode 100644
index 0000000..d4d1dad
--- /dev/null
+++ b/src/cysdl12.h
@@ -0,0 +1,76 @@
+/*
+ * cysdl12.h: the part of the SDL 1.2 API that Cuyo 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 2 or later, like the game.
+ */
+#ifndef CYSDL12_H
+#define CYSDL12_H
+
+#include <SDL.h>
+#include <emscripten.h>
+
+typedef SDL_Keycode SDLKey;
+
+#define SDL_HWSURFACE 0x00000001
+#define SDL_ANYFORMAT 0x10000000
+#define SDL_DOUBLEBUF 0x40000000
+#define SDL_FULLSCREEN 0x80000000
+#define SDL_SRCCOLORKEY 0x00001000
+/* Events SDL 2 does not have: the page keeps the window at one size and always has the focus. */
+#define SDL_VIDEORESIZE 0x7ffe
+#define SDL_ACTIVEEVENT 0x7ffd
+#define KMOD_META KMOD_GUI
+
+/* SDL 1.2 key names that SDL 2 spells differently. */
+#define SDLK_KP0 SDLK_KP_0
+#define SDLK_KP1 SDLK_KP_1
+#define SDLK_KP2 SDLK_KP_2
+#define SDLK_KP3 SDLK_KP_3
+#define SDLK_KP4 SDLK_KP_4
+#define SDLK_KP5 SDLK_KP_5
+#define SDLK_KP6 SDLK_KP_6
+#define SDLK_KP7 SDLK_KP_7
+#define SDLK_KP8 SDLK_KP_8
+#define SDLK_KP9 SDLK_KP_9
+#define SDLK_PRINT SDLK_PRINTSCREEN
+#define SDLK_BREAK SDLK_PAUSE
+
+#define SDLK_EURO SDLK_UNKNOWN
+
+/* SDL 1.2 key event symbol: SDL 2 has no "unicode" member; it is worked out from the key and the shift state
+   (letters and digits, and the symbols of the US layout; 0 for the other keys). */
+struct SDL_keysym {
+  SDL_Scancode scancode;
+  SDL_Keycode sym;
+  Uint16 mod;
+  Uint16 unicode;
+  SDL_keysym() : scancode(SDL_SCANCODE_UNKNOWN), sym(SDLK_UNKNOWN), mod(0), unicode(0) {}
+  SDL_keysym(const SDL_Keysym & k);
+};
+
+SDL_Surface * cy_SetVideoMode(int width, int height, int bpp, Uint32 flags);
+SDL_Surface * cy_GetVideoSurface(void);
+void cy_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h);
+void cy_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects);
+SDL_Surface * cy_DisplayFormat(SDL_Surface * surface);
+SDL_Surface * cy_DisplayFormatAlpha(SDL_Surface * surface);
+int cy_PollEvent(SDL_Event * event);
+SDL_Rect ** cy_ListModes(SDL_PixelFormat * format, Uint32 flags);
+void cy_WM_SetCaption(const char * title, const char * icon);
+int cy_EnableUNICODE(int enable);
+
+#define SDL_SetVideoMode cy_SetVideoMode
+#define SDL_GetVideoSurface cy_GetVideoSurface
+#define SDL_UpdateRect cy_UpdateRect
+#define SDL_UpdateRects cy_UpdateRects
+#define SDL_DisplayFormat cy_DisplayFormat
+#define SDL_DisplayFormatAlpha cy_DisplayFormatAlpha
+#define SDL_PollEvent cy_PollEvent
+#define SDL_ListModes cy_ListModes
+#define SDL_WM_SetCaption cy_WM_SetCaption
+#define SDL_EnableUNICODE cy_EnableUNICODE
+/* The main loop waits for the next step 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/src/sdltools.cpp b/src/sdltools.cpp
index d81aa11..9ef71f0 100644
--- a/src/sdltools.cpp
+++ b/src/sdltools.cpp
@@ -201,7 +201,7 @@ void computeMaskedFormat() {
     gMaskedFormat.palette = neupal;
 
     if (ncolours < 255) {
-      gMaskedFormat.colorkey = ncolours + 1;
+      /* (no colour key in SDL 2; palettes are not used in the browser build) */
       gColkeyErsatz = 0;  // Wird eh nicht benutzt...
     }
     else {
@@ -231,7 +231,6 @@ void computeMaskedFormat() {
 
       #undef DIST
 
-      gMaskedFormat.colorkey = c2best;
       gColkeyErsatz = c1best;
     }
   }
@@ -458,9 +457,7 @@ SDL_Surface * maskedDisplayFormat(SDL_Surface * src) {
        Seufz. Also selber nachbearbeiten. */
     SDLASSERT(!SDL_MUSTLOCK(src) && !SDL_MUSTLOCK(ret));
 
-    ret->flags |= SDL_SRCCOLORKEY;
-    Uint8 colkey = gMaskedFormat.colorkey;
-    ret->format->colorkey = colkey;
+    Uint8 colkey = 0;
     Uint32 amask = src->format->Amask;
     Uint8 * srcrow = (Uint8 *) src->pixels;
     Uint8 * retrow = (Uint8 *) ret->pixels;
@@ -596,9 +593,7 @@ bool pollEvent(SDL_Event & evt) {
   if (!SDL_PollEvent(&evt))
     return false;
   
-  if (evt.type == SDL_VIDEORESIZE) {
-    setVideoMode(evt.resize.w, evt.resize.h);
-  } else if (evt.type == SDL_MOUSEMOTION) {
+  if (evt.type == SDL_MOUSEMOTION) {
     evt.motion.x -= gShiftX;
     evt.motion.y -= gShiftY;
     /* We have to ensure: