Upgrade tree implemented. In-game, upgrades act as sort of a nuclear arms race, a way for players to get the upper hand in one way or another. As to what any of these upgrade icons actually mean, you'll have to wait until Saturday to find out.
Going to try and guess them in order.
Jetpack upgrade, obvious one
I see H20 and a raindrop... ability to breath underwater longer?
Logically it looks like a speed upgrade. Either running or Jetpack speed?
Looks like feet, running possibly?
No idea what that one is.
Hand... faster digging? Able to hold more items?
Feet again, presumably just a second upgrade to the first one.
On the other side, uh... no idea about that, either.
A shield next to it? Higher defense, a defensive magic skill or something?
The eye... I'd say "more vision" but I don't see how it would work, so some kind of detection system?
I have no idea about the next three, I'm assuming some sort of magic.
Missiles? Able to shoot them, or carry more or something?
Next one looks like a visionary upgrade, but again, I don't know how it would work. Looks kind of like a disguise ability, maybe hiding/invisibility?
And then the rest I don't know. How many of those did I get right?
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