A global tsunami broke out, all land sank, and mankind ushered in a cruel deep sea era!
Everyone starts with only a 2x2 tattered small raft, facing the deadly threats of hypothermia, hunger and violent sea beasts.
Young Lin Hai awakens to the "Absolute Synthesis and Upgrade System", everything can be reshaped, and there are only two choices for upgrades!
[3X3 Raft] Upgrade branch: [Heavy Armored Platoon] or [Covered Sailboat]? Lin Hai decisively chose to set sail!
[Ironclad Shelter] Upgrade Branch: [Abyss Submarine] or [Heavy Cruiser - Dawn]? All-steel deck, fire control sonar connected to the grid, you can directly hold the heavy crossbow to defeat the pirates!
Freezing rainy nights, strong acid red tides, abyss windless dead seas... The cycle of natural disasters has come, and Lin Hai has already driven a steel battleship to build an unsinkable super maritime city on the sea level!
