Colorado is an adventure game released in 1990 by Silmarils. The game was released for Amiga, Atari ST and PC (DOS).
In Colorado, you play as a trapper, whose goal is to survive in the wild - not yet fully discovered - North America. In the game, you will fight with the Indians, climb the cliffs, swim the canoe on the rushing river (here you also have to avoid Indians), etc. In the experience can help you with your wits and weapons that you can get during the game.