Celtic 4000 is an adventure available on the free online flash game website www.flash-games.net. The war is raging between the villages of the Kingdom of the Celts. All is played with the mouse, just click on people or houses to update them. Create and upgrade a village by occupying buildings and population. This is a simulation game type FPS where you have to work the villagers to collect plants and extract crystals; you must also be able to reproduce to increase the population, building new houses etc. You can also access the houses and buildings at the top of the screen. Have fun and enjoy the game!