Typically, a game like Messcraft will be cloned, mirrored, or embedded onto a different URL. These mirror sites are often hosted on domains that are not yet flagged by filtering software (like those ending in .io, .me, or .net).
This is where the search for begins.
Works for almost any block. Cons: Physics-heavy games like Messcraft run slowly on proxies due to latency. Also, many schools now block proxies via SSL inspection. messcraft unblocked