Vex 4. Besides, there are so many checkpoints on your way. The checkpoints in the game are marked as red flags and when you pass them, the red flags will turn into green. It is the identification of the checkpoints. The checkpoints record where you have passed through as achievement. Moreover, they have a more wonderful usage. If you make a mistake and have to play again, you will not have to return to the start point. You will return to the nearest checkpoint that you have passed. Therefore, you must always take notice of the checkpoints. If you ignore them, it may become a huge problem, you may have to return to the start point and play again from the beginning.