Ryuusei no Rockman 2/3 Easter Egg
I found an Easter egg on Ryuusei no Rockman 2 and 3. When you enter to the War-Rock screen, you can hit War-Rock. When you hit it 30 to 40 times, it will complain. if you keep hitting it, War-Rock will disappear and appear again(on Ryuusei no Rockman 3) or your menu will be closed(on Ryuusei no Rockman 2)
I have a video about that Easter egg: Ryuusei no Rockman 3 Easter Egg on YouTube
