Crimson Skies is an arcade flight simulator, set in an alternate reality in the year 1937. Based on a FASA pen-and-paper game, the player is cast as a daring rogue who flies missions for fame and fortune. The planes look like a mixture of futuristic planes and planes from WW2.
The single player missions let the player complete jobs such as finding a treasure, hijacking an experimental plane from the enemy or defending their base, a huge zeppelin.