There are a lot of specific differences and some similarities also. The most important difference between Christianity and other religions is what you have to do to achieve your eternal joy, security, salvation, paradise, nirvana, etc. If someone were to make up a religion to make people behave themselves you might expect that religion to give a lot of rules and regulations to keep, and then spell out the rewards for keeping the rules and the consequences for not keeping the rules. Most religions give some type of eternal bliss as the ultimate reward of keeping the rules perfectly. Many people who do not know much about Christianity incorrectly assume that this is also what Christians believe. Actually, the book of Christianity, the bible, tells the story of how God gave a lot of rules and regulations to some people and how they kept failing at keeping the rules. The story continues with the birth, life, and the teachings of Jesus who is, himself God. He performed miracles that proved he had the power of God. It's really not that hard to believe: If God had the power to create the universe and the earth and human beings, why couldn't he manifest himself in the form of a human? Each person has to ask themselves how well they have truly done at keeping even their own moral standards, that is, "can I keep all the rules of right and wrong that I expect others to keep." If the answer is that I can't keep the rules perfectly then I can't earn the rewards. (If you don't think you have any moral rules that you hold others to, notice what happens next time somebody steals some money from you...you suddenly are a very moralistic person!) So anyway, nobody who's honest with themselves can say they can keep all the rules and regulations. This is where Jesus comes in. He lived a perfect life and kept all the rules. Then he was sacrificed on the cross, paying the penalty for the wrong we have done. The bible tells the whole story and how, before Jesus came, God's people had to make sacrifices of cattle and other livestock to pay for their sins. (It's kind of one of those weird things that no one would really make up if they were going to make up a religion). So anyway, Jesus became the final sacrifice, once and for all, to pay for our failures in keeping the moral rules. God knows we can't keep the moral rules perfectly so he made a way for us to go to heaven in spite of our failing miserably at keeping the rules and regulations. A way to sum it up is that Christianity is God's way of reaching down to save people, while other religions are people's way to reach up to try to be worthy of life with God. I suggest finding a Christian who treats you with respect and kindness who can explain it to you more!