My first impression was "wow, this looks like Doom."
Rollback Post to RevisionRollBack
If you have ask "Is using X cheating?", the answer is most likely yes. Being a sandbox game doesn't change the fact you are cheating in it, regardless of what people say. However, the question you should be asking is "Does it matter?" The answer to that question is no.
"what's that blue-and-tan rectangular cube? why is it in my face? get it away. why can't i move? how come right clicking doesn't destroy blocks like it says? why should i press B? ooh, water. why does cheese absorb water?"