At least one thing is for sure, infiminer minecraft would not exist without each-other. First to cover some facts. The name minecraft is similar to infiniminer. The gameplay of both are very similar. Textures for the first release were almost identical. Both featured minecarts and tracks. Notch said minecraft was inspired by infiniminer. Both involve digging and building with blocks Both are procedural generated worlds. More facts The owner of infiniminer holds no grudges against notch. The creater of infiniminer was forced to release his coding as open source as his coding was leaked. Up for debate When Minecraft was initially released, the gameplay was very similar to infiniminer and had little extra to offer. Many say Notch stole a leaked source code to improve the game later on to get glitches out. What's funny is there are games coming out like Maniac Digger and people are freaking out saying Mojang (the new companies owner) should sue as its a blantant copy of minecraft. It seems like games continue to build off each other, for instance how many different types of first person shooters are there. Should the person who created the first one sue everyone else? At what point is a game in violation of copyright laws?