diff --git a/inc/conf.h b/inc/conf.h
index 895e0aa..e51ea40 100644
--- a/inc/conf.h
+++ b/inc/conf.h
@@ -27,3 +27,6 @@
 #define MISSILE_FRICTION    (MISSILE_ACCEL / MISSILE_MAX_SPEED)
 #define MISSILE_COOLDOWN    (TARGET_FPS / 2)
 #define REPLAY_SIZE         18000 /* 5 minutes */
+#define LEVEL_WIDTH         25
+#define LEVEL_HEIGHT        14
+#define LEVELBIN_SIZE       (6 + LEVEL_WIDTH * LEVEL_HEIGHT)
diff --git a/inc/level.h b/inc/level.h
index a80be78..9bd0649 100644
--- a/inc/level.h
+++ b/inc/level.h
@@ -28,6 +28,8 @@ void level_deinit(void);
 
 void level_load(int id);
 void level_save_kble(const char *path);
+void level_load_kble(const char *path);
+void level_load_kble_followup(void);
 void level_reload(void);
 void level_regen_visual_data(int editing);
 void level_next(void);
diff --git a/src/editor.c b/src/editor.c
index c118e62..3676c43 100644
--- a/src/editor.c
+++ b/src/editor.c
@@ -6,6 +6,8 @@
 #include "tile.h"
 #include "vec.h"
 #include <gint/display.h>
+#include <gint/gint.h>
+
 static int cx, cy;
 static int ctile = 1;
 
@@ -14,6 +16,7 @@ static void editor_draw(void);
 static void draw_grid(void);
 static void draw_cursor(void);
 static void editor_save(void);
+static void editor_load(void);
 
 void
 editor(void)
@@ -59,6 +62,11 @@ editor_update(void)
 		level_set(cx, cy, 0);
 		level_regen_visual_data(1);
 	}
+
+	/* load level */
+	if (input_down(K_PLAYBACK)) editor_load();
+	/* save level */
+	if (input_down(K_SAVE_REPLAY)) editor_save();
 }
 
 static void
@@ -106,5 +114,14 @@ editor_save(void)
 {
 	char path[256];
 	if (filedialog_save(path, sizeof(path))) return;
-	level_save_kble(path);
+	gint_world_switch(GINT_CALL(level_save_kble, path));
+}
+
+static void
+editor_load(void)
+{
+	char path[256];
+	if (filedialog_open(path, sizeof(path))) return;
+	gint_world_switch(GINT_CALL(level_load_kble, path));
+	level_load_kble_followup();
 }
diff --git a/src/input.c b/src/input.c
index 215a30c..915aea9 100644
--- a/src/input.c
+++ b/src/input.c
@@ -58,7 +58,7 @@ input_update(void)
 void
 input_dump_replay(void)
 {
-	const int fd = open(replay_path, O_WRONLY | O_CREAT | O_TRUNC);
+	const int fd = open(replay_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
 	if (fd != -1) {
 		write(fd, input.replay,
 		      input.replay_cursor * sizeof(PackedFrame));
diff --git a/src/level.c b/src/level.c
index 0b238f4..0c02b15 100644
--- a/src/level.c
+++ b/src/level.c
@@ -14,6 +14,7 @@
 #include <unistd.h>
 
 static struct Level level;
+struct LevelBin *user_level = NULL;
 extern bopti_image_t bimg_tileset;
 
 extern struct LevelBin kble_test, kble_burn, kble_bounce, kble_worm, kble_shake,
@@ -50,6 +51,10 @@ void
 level_deinit(void)
 {
 	level_free();
+	if (user_level != NULL) {
+		free(user_level);
+		user_level = NULL;
+	}
 }
 
 void
@@ -63,8 +68,8 @@ level_load(int id)
 void
 level_save_kble(const char *path)
 {
-	const int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC);
-	unsigned char data[356] = {0};
+	const ssize_t fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+	unsigned char data[LEVELBIN_SIZE] = {0};
 	int i;
 
 	data[0] = 0;
@@ -76,12 +81,45 @@ level_save_kble(const char *path)
 	while (i-- > 0)
 		data[i + 6] = level.data[i];
 
-	if (fd != -1) {
+	if (fd >= 0) {
 		write(fd, data, sizeof(data));
 		close(fd);
 	}
 }
 
+void
+level_load_kble(const char *path)
+{
+	const ssize_t fd = open(path, O_RDONLY);
+
+	if (user_level == NULL) {
+		user_level = malloc(LEVELBIN_SIZE);
+		if (user_level == NULL) return;
+	}
+
+	if (fd >= 0) {
+		size_t bytes;
+
+		bytes = read(fd, user_level, LEVELBIN_SIZE);
+		close(fd);
+
+		if (bytes != LEVELBIN_SIZE) return;
+		if (user_level->format != 0) return;
+		if (user_level->chunk_size != 1) return;
+		if (user_level->width != LEVEL_WIDTH) return;
+		if (user_level->height != LEVEL_HEIGHT) return;
+	}
+}
+
+void
+level_load_kble_followup(void)
+{
+	if (user_level != NULL) {
+		load(user_level);
+		level_regen_visual_data(1);
+	}
+}
+
 void
 level_reload(void)
 {