If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
This is a RPG/FPS where you start in a cave and you have no idea of how you got there. You have no memories. You find out that you are trapped on an island, and you need to find a way to survive. You can find weapons, equip them, loot chests, shop, level up and kill many dangerous creatures. There are also quests which will give you a reward if you finish them.