"Summer Sports Wii" Doesn't Exist—Likely Confusion With These Titles

No game titled "Summer Sports Wii" exists. You're likely thinking of:

• Wii Sports (2006): Pack-in launch title. Tennis, Baseball, Bowling, Golf, Boxing.
• Wii Sports Resort (2009): Requires MotionPlus. 12 sports: Swordplay, Wakeboarding, Frisbee, Archery, Basketball, Table Tennis, Golf, Bowling, Power Cruising, Canoeing, Cycling, Air Sports.
• Mario & Sonic at the Olympic Games (2007): Summer Olympic events with Nintendo/Sega characters. Sequels for 2008, 2012, 2016, 2020 Games.

All three are Wii-exclusive (or launched on Wii) and focus on motion-controlled sports.