diff --git a/.gitignore b/.gitignore
index f4ee2a1..84b56aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,5 @@ build/*.o
 build/*.d
 apidoc/python/build
 *.vim
+*.tox
+*.nvim*
diff --git a/apidoc/python/source/conf.py b/apidoc/python/source/conf.py
index 7439b8d..2dd0207 100644
--- a/apidoc/python/source/conf.py
+++ b/apidoc/python/source/conf.py
@@ -151,7 +151,4 @@ texinfo_documents = [
     (master_doc, 'toxic_api', 'toxic_api Documentation',
      author, 'toxic_api', 'One line description of project.',
      'Miscellaneous'),
-]
-
-
-
+]
\ No newline at end of file
diff --git a/src/chat.c b/src/chat.c
index a14bb27..e57df90 100644
--- a/src/chat.c
+++ b/src/chat.c
@@ -771,7 +771,7 @@ void chat_onGameInvite(ToxWindow *self, Tox *m, uint32_t friend_number, const ui
         return;
     }
 
-    if (length < GAME_PACKET_HEADER_SIZE) {
+    if (length < GAME_PACKET_HEADER_SIZE || length > GAME_MAX_DATA_SIZE) {
         return;
     }
 
diff --git a/src/game_base.c b/src/game_base.c
index c84e87d..0c764ec 100644
--- a/src/game_base.c
+++ b/src/game_base.c
@@ -162,13 +162,17 @@ void game_kill(ToxWindow *self)
 {
     GameData *game = self->game;
 
-    if (game->cb_game_kill) {
-        game->cb_game_kill(game, game->cb_game_kill_data);
+    if (game) {
+        if (game->cb_game_kill) {
+            game->cb_game_kill(game, game->cb_game_kill_data);
+        }
+
+        delwin(game->window);
+        free(game->messages);
+        free(game);
     }
 
-    delwin(game->window);
-    free(game->messages);
-    free(game);
+    kill_notifs(self->active_box);
     del_window(self);
 }
 
@@ -746,7 +750,7 @@ bool game_onKey(ToxWindow *self, Tox *m, wint_t key, bool is_printable)
         return true;
     }
 
-    if (!game->is_multiplayer && key == KEY_F(2)) {
+    if (key == KEY_F(2) && !game->is_multiplayer) {
         game_toggle_pause(self->game);
         return true;
     }
@@ -814,6 +818,8 @@ void game_onPacket(ToxWindow *self, Tox *m, uint32_t friendnumber, const uint8_t
     }
 
     if (data[0] != GAME_NETWORKING_VERSION) {
+        fprintf(stderr, "Game packet rejected: wrong networking version (got %d, expected %d)\n", data[0],
+                GAME_NETWORKING_VERSION);
         return;
     }
 
@@ -1081,7 +1087,7 @@ void game_set_cb_on_packet(GameData *game, cb_game_on_packet *func, void *cb_dat
 /*
  * Wraps `packet` in a header comprised of the custom packet type, game type and game id.
  */
-static int game_wrap_packet(const GameData *game, uint8_t *packet, size_t size, GamePacketType packet_type)
+static int game_packet_wrap(const GameData *game, uint8_t *packet, size_t size, GamePacketType packet_type)
 {
     if (size < GAME_PACKET_HEADER_SIZE + 1) {
         return -1;
@@ -1100,7 +1106,7 @@ static int game_wrap_packet(const GameData *game, uint8_t *packet, size_t size,
     return 0;
 }
 
-int game_send_packet(const GameData *game, const uint8_t *data, size_t length, GamePacketType packet_type)
+int game_packet_send(const GameData *game, const uint8_t *data, size_t length, GamePacketType packet_type)
 {
     if (length > GAME_MAX_DATA_SIZE) {
         return -1;
@@ -1108,7 +1114,7 @@ int game_send_packet(const GameData *game, const uint8_t *data, size_t length, G
 
     uint8_t packet[GAME_MAX_PACKET_SIZE];
 
-    if (game_wrap_packet(game, packet, sizeof(packet), packet_type) == -1) {
+    if (game_packet_wrap(game, packet, sizeof(packet), packet_type) == -1) {
         return -1;
     }
 
@@ -1124,5 +1130,5 @@ int game_send_packet(const GameData *game, const uint8_t *data, size_t length, G
         return -1;
     }
 
-    return -0;
+    return 0;
 }
diff --git a/src/game_base.h b/src/game_base.h
index 43909d1..672a01c 100644
--- a/src/game_base.h
+++ b/src/game_base.h
@@ -394,7 +394,7 @@ void game_kill(ToxWindow *self);
  *
  * `packet_type` should be GP_Invite for an invite packet or GP_Data for all other game data.
  */
-int game_send_packet(const GameData *game, const uint8_t *data, size_t length, GamePacketType packet_type);
+int game_packet_send(const GameData *game, const uint8_t *data, size_t length, GamePacketType packet_type);
 
 #endif // GAME_BASE
 
diff --git a/src/game_centipede.c b/src/game_centipede.c
index ccc53ea..1215092 100644
--- a/src/game_centipede.c
+++ b/src/game_centipede.c
@@ -42,7 +42,7 @@
 #define CENT_MAX_NUM_SEGMENTS 12
 
 /* Get a free life every time we get this many points. Needs to be > the most points we can get in a single shot. */
-#define CENT_SCORE_ONE_UP 5000
+#define CENT_SCORE_ONE_UP 7000
 
 /* Max number of lives we can have */
 #define CENT_MAX_LIVES    6
@@ -53,6 +53,9 @@
 /* Max speed of an enemy agent */
 #define CENT_MAX_ENEMY_AGENT_SPEED 8
 
+/* Determines the overall speed of the game per game_set_update_interval() */
+#define CENT_GAME_UPDATE_INTERVAL 14
+
 /* How often a head that reaches the bottom can repdoduce */
 #define CENT_REPRODUCE_TIMEOUT 10
 
@@ -64,7 +67,7 @@
 #define CENT_BULLET_COLOUR    YELLOW
 #define CENT_BULLET_ATTR      A_BOLD
 #define CENT_BULLET_CHAR      '|'
-#define CENT_BULLET_SPEED     150
+#define CENT_BULLET_SPEED     300
 
 #define CENT_BLASTER_ATTR     A_BOLD
 #define CENT_BLASTER_CHAR     'U'
@@ -1730,7 +1733,7 @@ int centipede_initialize(GameData *game)
     game_show_lives(game, true);
     game_show_high_score(game, true);
     game_increment_level(game);
-    game_set_update_interval(game, 10);
+    game_set_update_interval(game, CENT_GAME_UPDATE_INTERVAL);
 
     if (cent_init_state(game, state) == -1) {
         free(state);
diff --git a/src/game_chess.c b/src/game_chess.c
index 9bcf93e..9a11382 100644
--- a/src/game_chess.c
+++ b/src/game_chess.c
@@ -826,9 +826,7 @@ static bool chess_mock_move_valid(ChessState *state, const Player *player, Tile
     chess_copy_piece(&to->piece, &from->piece);
     from->piece.type = NoPiece;
 
-    if (chess_player_in_check(state, player)) {
-        in_check = true;;
-    }
+    in_check = chess_player_in_check(state, player);
 
     from->piece.type = from_piece.type;
     chess_copy_piece(&to->piece, &to_piece);
@@ -1079,9 +1077,7 @@ static void chess_update_state(ChessState *state, Player *self, Player *other, c
 
     self->in_check = false;
 
-    if (chess_player_in_check(state, other)) {
-        other->in_check = true;
-    }
+    other->in_check = chess_player_in_check(state, other);
 
     state->message_length = 0;
     state->black_to_move ^= 1;
@@ -1813,7 +1809,7 @@ void chess_cb_kill(GameData *game, void *cb_data)
 static int chess_handle_opponent_move_packet(const GameData *game, ChessState *state, const uint8_t *data,
         size_t length)
 {
-    if (length != CHESS_PACKET_MOVE_SIZE || data == NULL) {
+    if (length < CHESS_PACKET_MOVE_SIZE || data == NULL) {
         return -1;
     }
 
@@ -1845,7 +1841,7 @@ static int chess_handle_opponent_move_packet(const GameData *game, ChessState *s
     }
 
     if (chess_try_move_opponent(state, from_tile, to_tile) != 0) {
-        fprintf(stderr, "opponent tried to make an illegal move: %c%d-%c%d\n", from_l, from_n, to_l, to_n);
+        fprintf(stderr, "Chess opponent tried to make an illegal move: %c%d-%c%d\n", from_l, from_n, to_l, to_n);
         return -1;
     }
 
@@ -1887,7 +1883,7 @@ static void chess_cb_on_packet(GameData *game, const uint8_t *data, size_t lengt
         return;
     }
 
-    if (!cb_data) {
+    if (cb_data == NULL) {
         return;
     }
 
@@ -1928,7 +1924,7 @@ static void chess_cb_on_packet(GameData *game, const uint8_t *data, size_t lengt
 
         default: {
             fprintf(stderr, "Got unknown chess packet type: %d\n", type);
-            break;
+            return;
         }
     }
 
@@ -2044,7 +2040,7 @@ static int chess_packet_send_resign(const GameData *game)
     uint8_t data[1];
     data[0] = CHESS_PACKET_RESIGN;
 
-    if (game_send_packet(game, data, 1, GP_Data) == -1) {
+    if (game_packet_send(game, data, 1, GP_Data) == -1) {
         return -1;
     }
 
@@ -2060,7 +2056,7 @@ static int chess_packet_send_move(const GameData *game, const Tile *from, const
     data[3] = to->chess_coords.L;
     data[4] = to->chess_coords.N;
 
-    if (game_send_packet(game, data, 5, GP_Data) == -1) {
+    if (game_packet_send(game, data, 5, GP_Data) == -1) {
         return -1;
     }
 
@@ -2073,7 +2069,7 @@ static int chess_packet_send_invite(const GameData *game, bool self_is_white)
     data[0] = CHESS_PACKET_INIT_SEND_INVITE;
     data[1] = self_is_white ? Black : White;
 
-    if (game_send_packet(game, data, 2, GP_Invite) == -1) {
+    if (game_packet_send(game, data, 2, GP_Invite) == -1) {
         return -1;
     }
 
@@ -2085,7 +2081,7 @@ static int chess_packet_send_accept(const GameData *game)
     uint8_t data[1];
     data[0] = CHESS_PACKET_INIT_ACCEPT_INVITE;
 
-    if (game_send_packet(game, data, 1, GP_Data) == -1) {
+    if (game_packet_send(game, data, 1, GP_Data) == -1) {
         return -1;
     }
 
@@ -2160,4 +2156,3 @@ int chess_initialize(GameData *game, const uint8_t *init_data, size_t length)
 
     return 0;
 }
-
diff --git a/src/game_util.c b/src/game_util.c
index 094a412..ba6fe63 100644
--- a/src/game_util.c
+++ b/src/game_util.c
@@ -104,22 +104,28 @@ void game_util_move_coords(Direction direction, Coords *coords)
 {
     switch (direction) {
         case NORTH: {
-            --(coords->y);
+            if (coords->y > 0) {
+                --(coords->y);
+            }
+
             break;
         }
 
         case SOUTH: {
-            ++(coords->y);
+            ++(coords->y);  // Will rollover if you do something stupid
             break;
         }
 
         case EAST: {
-            ++(coords->x);
+            ++(coords->x);  // Will rollover if you do something stupid
             break;
         }
 
         case WEST: {
-            --(coords->x);
+            if (coords->x > 0) {
+                --(coords->x);
+            }
+
             break;
         }
 
diff --git a/src/windows.c b/src/windows.c
index f68bfbd..8be910d 100644
--- a/src/windows.c
+++ b/src/windows.c
@@ -457,7 +457,12 @@ void del_window(ToxWindow *w)
     refresh();
 
     if (num_active_windows > 0) {
+        if (active_window_index == 2) {    // if closing current window would bring us to friend list
+            set_next_window(-1);           // skip back to the home window instead. FIXME: magic numbers
+        }
+
         set_next_window(-1);
+
         --num_active_windows;
     }
 }
@@ -519,6 +524,12 @@ void on_window_resize(void)
 
             getmaxyx(w->window, y2, x2);
 
+            if (y2 <= 0 || x2 <= 0) {
+                fprintf(stderr, "Failed to resize game window: max_x: %d, max_y: %d\n", x2, y2);
+                delwin(w->window);
+                continue;
+            }
+
             w->window_bar = subwin(w->window, WINDOW_BAR_HEIGHT, COLS, LINES - 2, 0);
             w->game->window = subwin(w->window, y2 - CHATBOX_HEIGHT - WINDOW_BAR_HEIGHT, x2, 0, 0);
             continue;
@@ -549,7 +560,7 @@ void on_window_resize(void)
         if (y2 <= 0 || x2 <= 0) {
             fprintf(stderr, "Failed to resize window: max_x: %d, max_y: %d\n", x2, y2);
             delwin(w->window);
-            return;
+            continue;
         }
 
         if (w->show_peerlist) {
@@ -790,7 +801,6 @@ void draw_active_window(Tox *m)
 
         if (ch == user_settings->key_next_tab || ch == user_settings->key_prev_tab) {
             set_next_window(ch);
-            ch = KEY_F(2);
         }
 
         a->onKey(a, m, ch, false);
@@ -892,18 +902,30 @@ void kill_all_windows(Tox *m)
             continue;
         }
 
-        if (w->type == WINDOW_TYPE_CHAT) {
-            kill_chat_window(w, m);
-        } else if (w->type == WINDOW_TYPE_CONFERENCE) {
-            free_conference(w, w->num);
-        }
+        switch (w->type) {
+            case WINDOW_TYPE_CHAT: {
+                kill_chat_window(w, m);
+                break;
+            }
+
+            case WINDOW_TYPE_CONFERENCE: {
+                free_conference(w, w->num);
+                break;
+            }
 
 #ifdef GAMES
-        else if (w->type == WINDOW_TYPE_GAME) {
-            game_kill(w);
-        }
+
+            case WINDOW_TYPE_GAME: {
+                game_kill(w);
+                break;
+            }
 
 #endif // GAMES
+
+            default: {
+                break;
+            }
+        }
     }
 
     /* TODO: use enum instead of magic indices */
diff --git a/src/windows.h b/src/windows.h
index bc310e2..a33ae2f 100644
--- a/src/windows.h
+++ b/src/windows.h
@@ -310,5 +310,5 @@ void draw_window_bar(ToxWindow *self);
    call at least once per second */
 void refresh_inactive_windows(void);
 
-#endif // WINWDOWS_H
+#endif // WINDOWS_H