Raft Survival: Ocean Nomad
A great game for mobiles, it starts with an airplane landing on the water unsuccessfully. All you have is a little disobedient raft, a steel hook, and an endless row of useful debris surrounding you. Don’t waste time, hook it and apply it in smart crafts: a distiller out of junk is better than no fresh water at all.
For successfully completed tasks, you get doubloons to spend in a straying merchant’s shop. Also, you have a whole map of desolate islands to explore… and call for help, maybe?