Let's look:

Solved: fancy trees

Solved: biomes, bigger (infinite?) world, flat snow

Solved: biomes, more blue water, fancy trees (with vines?)
Text mysteries:
I am eight but I am not, space is me but I'm not space, what am I?
It can be infinite ("8" rotated 90 degrees)
I don't fake things.
echo("<br/>");
I don't know
Think outside your own device.
What? But mine is perfectly fine! (the last one is probably not a mystery)
Oh god, so hard
