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It was also adapted to early Windows editions, but this was in the late 1980s and early 1990s, when computers were often reserved for the wealthy and/or nerdy.ĭrug Wars truly went viral (at a time before that word was used to describe anything but pathogens) when it appeared on a TI-82 graphing calculator-the same device that could be found in any high school advanced math class throughout the 1990s and 2000s. Finishing this set of 9 missions would get back to 6-space-missions.Dell would later rewrite the game in DOS and upload it to a bulletin board system (BBS), which was how computer users in the 1980s communicated, shared files, or played games online.Īfter high school, Dell forgot about the game and enrolled in the US Naval Academy, studying computer science as he began a military career.ĭrug Wars continued to evolve as it was reprogrammed into an actual BBS game. The first 9 missions are using 6 spaces for the invader, but the 9 missions after the first 9 missions would have 1 space less (i.e. Missions get faster and faster but after finishing 9 missions the game speed would slow down again. If the invaders killed in the mission accumulates to be multiple of 10, a special saucer will appear (represented by an n). If all 30 missiles are fired but there are still remaining invaders the game is over immediately too. The digit second from the left on the screen is the number of lives remaining in that mission.Įvery mission has 16 invaders coming and you got 30 missiles to kill them. The game is over if you lose 3 lives in the same mission. If any invaders successfully land on your base before they are killed you lose a life. Invaders appears from the right side of the screen flying leftwards gradually. This left most digit represents the type of invader you can kill if you press the fire button. The aim button is for aiming the missile, pressing it would make the left most digit on the screen to cycle through 0 to 9 and then n and then 0 again. The left button is aim and the right button is fire. It was implemented on a pocket calculator that just has an 8 digit LCD panel and each digit is just a 7-segment-LCD with 2 buttons.
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It is about there are invaders from space represented by digits attacking our missile base. The game is actually called "Digit invader".
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