The application for Gloomhaven which simulates the Monster Action Decks. It streamlines the setup of the game and speeds up the setup of the game (less shuffling). The application have Action Decks for every monster type in the game. It allows players to easily manage the monster deck cards for current encounter. Each card stack has its own history, that starts with last "reshuffle" card. Additionally application allows to simulate Monster Modifier Deck. The application will shuffle deck automatically at the end of each round when MISS or CRIT cards are be drawn. You can also add Curs and Bles cards to the deck.The state of the application is saved whenever you close it - you can complete the game later. I would like to thank Isaac Childres for creating such a wonderful game as Gloomhaven. The application was created with his permission.I would also like to thank Marek Baranowski for help with the graphics and creating a wonderful icon for application.