Many companies resort to this option when they feel like that when a game isn't bringing in optical income they shut it down.
It's more common with those powered by servers and require an online connection. This usually is caused by somebody higher up the chain in the company who orders it shut down. The best example of this would be "Electronic Arts". There is a wiki of game's and game companies they killed off.
The best way to keep these games going instead of dying is by either passing the game off to the next company, or opening the source code for people to use and run the game themselves. With the source code people would have a better of chance of saving the game then nothing at all.
Vote this so we can help stop companies from killing of games like its the only option.
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