minecraft.novylen.net

Whats the difference between Minecraft and Minecraft classic? I went on the minecraft website to see if there was a free trail i could play because i cant afford to pay for it. it said i could buy minecraft or get the free one "minecraft classic" which is outdated. but whats the difference between them?
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Minecraft classic is minecraft without enemies, it's pretty much just creative mode.
Minecraft is survival, there are enemies, you need to gather resources, etc