The two games are not based on the same concept. CF has blood volume display and usually cannot be restored. Firearms are directly blind-fired. Very few weapons have sights (no transition actions), and the impact feels Relatively weak, a bunch of characters go into battle wearing weird clothes (is it really okay not to wear a tactical vest). The krypton gold system is not particularly reasonable. Various strange firearms (exuding fairy energy(?ω?)). The battle rhythm in the multiplayer mode is relatively slow

COD has a breather and health recovery, the weapons are closer to reality (except for COD science fiction works), the details are well described, the sense of attack is relatively strong, and the character appearance is more realistic (except for COD science fiction works) ), weapons must be sighted to hit accurately, the multiplayer mode is relatively fast-paced, and the kill streak rewards can stun some players, and even if they don’t watch the death replay, they won’t know how they died.

To say that Call of Duty plagiarized CF is probably not to start a fight. COD1 was released in 2004, while CF was released in 2007. From this point of view, if the latecomer claims that the earlier one plagiarized, I’m afraid it’s not at all It just doesn't hold up.