You have about another 70ish episodes if you don't want the games to spoil it. That is assuming you are referring to Naruto Shippuden. The games are fun, but you can hold out on playing the story mode if you really enjoy watching it. Some things that happen in the anime are portrayed differently in the game. If you're talking about Naruto, and desperately want to catch up, then watch until 135, then play the story mode for Ninja Storm 2. It'll save you about 140 or so episodes. It all depends if you are willing to make the time for it.
Per Angusta Ad Augusta