Viva! Patrol is a mini-game in Devil Summoner: Soul Hackers.
The game is rarely suggested by demons during negotation. The game is played within the text-message window in an ASCII representation of a river. The goal is to get the player's boat (represented by the letter A) through gates (M) and rescue civilians (alternating between Y and T), while avoiding obstacles (*). A strong current pushes the boat back, which can be countered with the confirmation button on the controller/3DS system. Hitting an obstacle or running out of time ends the game.
If the player does not manage to beat the high score, they get infinite retries if so desired, or can stop playing to end negotiations.