Wii Sports was made by Katsuya Eguchi, who managed a software development group at Nintendo. The aim of the Wii was to appeal to people who had not played video games before. To do this, they needed a game that let both experienced and new players play in a fun way. Nintendo also wanted people to use the Wii daily, so they wanted to make Wii Sports a flagship game. This is why Wii Sports has such simple graphics and gameplay. Eguchi needed a widely familiar theme for the game, so he chose sports. Instead of having professional athletes or realistic graphics, the game was designed to be easy so complicated gameplay was left out. Motion-sensing actions used the Wii Remote's accelerometer to interpret movements, and Nintendo focused on actions like hitting to make them very realistic. Nintendo did not think players would buy the Wii just to play Wii Sports, so they bundled it with the console, which helped it to sell a lot of copies.