Celtae

Celt - Latin Celta, plural Celtae - were an early Indo-European people who from the second millennium BCE to the first century BCE spread over much of Europe. Their tribes and groups eventually ranged from the British Isles and Portugal to as far east as Transylvania, the Black Sea coasts, and Galatia in Anatolia, and they were in part absorbed into the Roman Empire as Britons, Gauls, Boii, Galatians, Celtiberians, and Lusitans.

Celtae is a "worker swapping" game powered by a rondel in which players choose actions to perform during their turn. On their turn, players swap one of their three active workers with one of the three workers on the action space they wish to perform, then they perform the action - which will be boosted if they have in their worker pool specific types of workers: farmers, builders, soldiers, and nobles.

The farming action allows players to draw cards, and it's boosted by farmers. Cards have three types of uses in the game: building, preparing for battle, and engaging with the druid order.

The build action allows players to build and expand citadels on the board by placing their discs on them, and it's boosted by builders. At game's end, only completed citadels will score, and players have to work together to complete them and score their presence on them. Each time players build in a citadel, they gain a bonus that was randomly assigned during set-up. The combination of these bonuses with a timely performed action often results in powerful combos.