diff --git a/2048_curses.c b/2048_curses.c
index 6a39edf..ed20983 100644
--- a/2048_curses.c
+++ b/2048_curses.c
@@ -182,14 +182,14 @@ int space_left()
     return 0;
 }
 
-/* places a random block onto the grid */
+/* places a random block onto the grid - either a 4, or a 2 with a chance of 1:3 respectively */
 /* could do this in a much smarter fashion by finding which spaces are free */
 void rand_block()
 {
     if (space_left()) {
         int x_p, y_p;
         while (g[x_p = rand() % SZ][y_p = rand() % SZ]);
-        g[x_p][y_p] = 2;
+        g[x_p][y_p] = (rand() & 3) ?  2 : 4;
     }
     else {
         endwin();
diff --git a/2048_no_curses.c b/2048_no_curses.c
index 0b87647..956d79e 100644
--- a/2048_no_curses.c
+++ b/2048_no_curses.c
@@ -181,14 +181,14 @@ int space_left()
     return 0;
 }
 
-/* places a random block onto the grid */
+/* places a random block onto the grid - either a 4, or a 2 with a ratio of 1:3 respectively */
 /* do this in a smarter fashion */
 void rand_block()
 {
     if (space_left()) {
         int x_p, y_p;
         while (g[x_p = rand() % SZ][y_p = rand() % SZ]);
-        g[x_p][y_p] = 2;
+        g[x_p][y_p] = (rand() & 3) ? 2 : 4;
     }
     else {
         printf("\n"