Lost Ruins of Arnak is a 2020 board game by the husband-wife duo Michal "Elwen" Štach and Michaela "Mín" Štachova.

[2] Lost Ruins of Arnak uses a combination of deck-building and worker placement mechanics for its core gameplay.

On their turn, players can manage their cards, send their archeologists to discover new sites, dig at already explored ones, overcome guardians, or research.

After the final round players add up their points coming from different sources.

[4][3] A solo variant is also featured, utilizing a set of cards as an artificial opponent, which lets players experience the game alone.