Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Tombstone City: 21st Century is a single-player video game designed in 1981 exclusively for the Texas Instruments TI-99/4A home computer.The player controls a schooner, shooting aliens (called Morgs) and tumbleweeds in order to woo people back to live in an abandoned city somewhere in the Southwestern United States. The score is labeled as "Population". The game ends when all schooners are gone.The player's schooner starts out in the middle of sixteen blocks. These are used as shelter, as the Morgs cannot enter this area. The player must venture out to shoot either tumbleweeds (100 points each) or, more importantly, the Morgs (150 points each). Tumbleweeds replenish when the last one has been eliminated. Morgs are produced via one of the cacti out in the field. They can only appear from a cactus that touches another cactus. Whenever a Morg is shot, it turns into another cactus. The goal is to leave only cacti standing individually, so that no more Morgs can appear. When all cacti stand alone, one game day ends, the player is awarded a bonus schooner, and a new day begins with cacti repositioned.

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