When younger I played one demo game and now I want to play it again but I cant remember the title of the game. In the game you are a man on island and you are fighting with monsters. At the beginning you are on one mountain and you have to go down. Then a big monsters go out of the earth. There are also see. If you try to get in the sea a passage of piranhas harm you. There are also animals which circle around another mountain. One of the mission is to kill 10 of these monsters and take their ham. The hero which you play with have a flypack on his back. You cant fly longer because there is an indicator which shows you remaining fly stats. The indicator have a shape of arrow. I cant give you more information. The game is old and its title includes "3D". Thanks!