If you like cycling, then this game is worth it, if not, don't buy it.
The flat stages are boring and there is no way to simulate the stages, you have to play chosen parts of a stage and everything is in 1:1 time.
Only the mountains are fun because you have to be positioned correctly, watch your effort bar and the other riders while keeping the pace at the same time.
You have to be concentrated 100 % of the time on these stages, and that's what makes it fun, but that's also about the only thing that is fun and interesting about this game.
Things missing:
*A way to simulate a stage or fast forward x8 or x16.
*A career where you control one specific rider all the way through a career making him the best sprinter, climber, stage racer or puncher in the world. You need to have a way to work your self through the ranks until the part where you are the captain. And you should be able to start in the smaller teams, be discovered, change team, get payed and evolve to a star.
*The ability to choose the difficulty of the game.