Mini Cywilizacja ("Mini Civilization") is a small, fast 2 to 5 player game. The game consists only of cards, that represent resources and buildings at the same time.
Each card has 4 buildings and 4 resources on it (2 on each side). Players start with hand of 1 Wood and 1 Stone. On a player's turn, he has two options:
get 1 resource (by exchanging his resource with 1 higher from the table)
buy a building (each card has 2 visible buildings)
After certain number of buildings are built, the game comes to an end. Whoever has more points wins the game.
It is a free, collectible game, that is available as a gift after a purchase in a board-game designer's store.
More information on the game is available (in Polish) here: http://uwookiego.pl/mini-cywilizacja