I was really doubtful about this one and only purchased it because of the outstanding reviews and getting it on sale. I was in for a big surprise. I absolutely love this game. Totally worth it even at full price. The physics is astounding. And I can't count how many times I've been standing there smiling (as recounted by my wife) as I look around at the fabulous scenery. The variety in different courses is amazing. I never thought I'd purchase any of the add-on courses, but I was wrong on that as well. It transports you and also provides fun and a challenge. I've "ridden" on trains in Tokyo and gondolas in Venice. The cost of the add-on courses can add up at about $5 a pop, but that's about the same price as a round of actual mini golf and definitely just as fun. Don't think about it - get this experience!!!