diff --git a/autoload/VimGameCodeBreak/game.vim b/autoload/VimGameCodeBreak/game.vim
index 56f59d0..dea1ec1 100644
--- a/autoload/VimGameCodeBreak/game.vim
+++ b/autoload/VimGameCodeBreak/game.vim
@@ -127,11 +127,11 @@ function! s:userInputProc(input)
 endfunction
 
 function! s:createNewBall()
-    for l:item in s:item
-        if l:item.active
-            return
-        endif
-    endfor
+
+    if VimGameCodeBreak#game#getBallCount() > 0
+        return
+    endif
+
     let l:y = line('$') - 1
     let l:x = s:ship.getCenter()
     let s:ball = VimGameCodeBreak#ball#new(s:screen, s:bounce, s:life, s:ship, s:config)
diff --git a/autoload/VimGameCodeBreak/item_bomb.vim b/autoload/VimGameCodeBreak/item_bomb.vim
index 60189e3..9bad921 100644
--- a/autoload/VimGameCodeBreak/item_bomb.vim
+++ b/autoload/VimGameCodeBreak/item_bomb.vim
@@ -17,7 +17,7 @@ function! VimGameCodeBreak#item_bomb#new(screen, bounce, life, ship, config)
     let l:obj = VimGameCodeBreak#abstractBall#new(a:screen, a:bounce, a:life, a:ship, a:config)
     let l:obj = deepcopy(obj)
 
-    let l:obj.icon = 'O'
+    let l:obj.icon = 'I'
     let l:obj.interval = 40
     let l:obj.hitCount = 10
     let l:obj.create = funcref('<SID>create')