Erunaaku No Zaihou is a Famicom action game released on 1987-08-10. The story follows a man who attempts to navigate upriver, facing various enemies along the way. As he progresses, his goal is to reach the end of the river without being harmed.
The gameplay revolves around controlling the man as he moves left and right, throwing sais at incoming enemy creatures. The player must avoid taking damage while trying to clear the screen of enemies. Power-ups can be collected to restore lives or enhance the man's defense, adding a layer of strategy to the game.