If you like baseball and you aren't looking for a deep game experience, The Bigs on the Wii delivers.
The controls make the game. The action of swinging the bat is exactly like it would be in real life. The pitching truly feels like you are throwing a ball and the different pitch types are executed perfectly. Throwing to the bases takes some getting used too, but after a few games becomes just as natural as the rest of the motions, although I still throw to the wrong base on occasion. This is a game you definitely have to stand up to play, which engrosses you in the experience further. It is so much more satisfying to rope one out of the park with a full baseball style swing than with a well timed button press. Throwing the perfect 101 mph fastball that paints the corner to end the game is much more rewarding when you really feel like you threw the ball. I actually was physically unable to play the game for a few days because I played for 8 hours straight and my arm hurt too much to play anymore. It says something for the game when the same muscles are sore the next day after playing as they would be after playing a real game of baseball.
The game is a little weak on game play options. There is the standard exhibition, home run derby and rookie challenge. The lack of an actual season mode if rather disappointing. The rookie challenge is an interesting take on the game of baseball. You pick your team and create your rookie. There aren't many face options but there are quite a few different options for the uniform. Everything from batting gloves to batting stance to what kind of bat your rookie uses. Once the challenge is started, several teams open up to play against. Each team has a normal game (though usually only 3 to 5 innings), a stat challenge (you must complete requirement like 5 RBI's, hit a home run with your rookie, or come back from a 3 point deficit in the 9th), and steal a player (you play a game and if you win, you select a player to steal). After you complete these scenarios for a team, other teams are unlocked to play until you have unlocked every team. Performing well in a game earns your rookie points to spend on his stats. The later stat challenges are a little unbalanced. On the medium difficulty, I was beating teams by 30 runs but I wasn't playing good enough to complete some of the challenges. The MLB roster also isn't complete. It is strange in a game where every player looks like they are juiced up on steroids (even the pitchers) that Barry Bonds in nowhere to be found.
Co-op has never really been approached as an option before in a baseball game (that I can recall) but The Bigs nails it perfectly. It is an absolute blast to play through the rookie challenge with a friend. In the first inning, one player pitches and the other fields. In the next inning, players switch tasks. During batting, players alternate batters. While one player is batting, the other player controls the lead runner if anyone is on base. Since there is an odd number of batters on a team, each person gets to bat as every player during the course of the game.
I missed the option to play a whole season with my team, but the rookie challenge was a fun diversion. The co-op options make it a perfect game to play with a friend. The Bigs is a great game definitely worth owning if you have any interest in baseball or need a game that gets you off the couch.