Dosimeter - hot and cold is a simulation game developed by Shark82 for Android devices. The game involves finding radiation sources in your area using a Geiger-Müller counter (dosimeter) that displays the degree of radiation. The objective of the game is to find sources of radiation of varying strengths, with stronger sources being located further away.

The game is designed to be played during short walks in the park or on smaller trips. The locations of the resources change every day, which makes every day a new challenge. The game uses red and blue LEDs to guide players to different places in their area. When the red LED flashes, it means the player is approaching the target, while the blue LED flashing indicates that the player is moving away from the target.

Overall, Dosimeter - hot and cold is a unique and engaging game that combines simulation and exploration. It is a great way to spend time outdoors while also learning about radiation and dosimeters.