Backyard Baseball is a retro video game originally released on the GBA in 2002 and it is now available as a free online game. Enter the ultimate backyard tournament, score home runs and guide your team to victory. Use your arrow keys to go through the in-game menus, press Enter to confirm your selection. While playing as a batter, use your arrows to set up a shot. Once you are ready for a play, press Z to swing your bat and shoot the ball. In the Backyard Baseball game online, there are many different game modes such as the Quick Play, Season and Home Run Derby.