Khronos is a game for two to five players designed by Ludovic Vialla and Arnaud Urbon. In the game, players build domains by laying tiles representing buildings on three game boards, each representing the same area in three different ages. By paying one coin, players can travel between the different ages. The game lasts seven turns and players receive money based on the strength of their buildings in the various ages at the end of turns four and seven.
There are three kinds of buildings - military (orange in colour), religious (purple) and civil (blue), and each colour is most powerful in one of the three ages. Each building costs a certain amount of correctly-coloured cards (drawn on each turn) to build and this building-cost is also the number of coins a building generates when scoring takes place.
The time travel aspect of the game comes into play in that larger buildings built in earlier ages 'ripple' forward to the game boards in the future; buildings in the future can potentially be destroyed in this way!

Although a popular game, it is criticised by some due to the ever-present threat of analysis paralysis

Analysis paralysis

The term "analysis paralysis" or "paralysis of analysis" refers to over-analyzing a situation, so that a decision or action is never taken, in effect paralyzing the outcome. A decision can be treated as over-complicated, with too many detailed options, so that a choice is never made, rather than...

which is particularly strong in this game.

In 2006 it won the Concours International de Créateurs de Jeux de Société award.