Extrait de la FAQ officielle -
Q: Why are there so many agents running around my base?
In the full game, the arrival of agents is determined by the player´s notoriety and heat levels. These game mechanics are tied to the world map, which does not appear in the demo. We therefore had to artificially insert agents onto the island; in the full game, the arrival of agents is much more gradual, and only reaches comparable levels to the demo if the player´s heat is very high.