When you get your first student, or perhaps when you acquire 100 science for the first time, there should be a pop up message or something pointing you to the laboratory. Took me a while to figure out that there were tabs up there, I just figured I'd unlock more units when I hit a threshold somewhere.
Love the concept, and realize it's still being developed, but . . . the current "endgame" is pretty weak. Mixers become pointless when you get the last squid, other than for the sellout bonus. And the squids themselves become obsolete shortly thereafter, as the oyster overshadows all but the most active play.
Fun at first, but after the first couple of resets, the beginning gets pretty unbearable (no gear, and only way to get any is to kill mobs that really need some gear to beat)
Wow, I think the moon may have gotten accelerated a TAD too much. . . I've reset 3 times in the last 20 minutes, each time multiplying my angel count by at least 1,000 times LOL
So, basically even when I have 4 knights, I only get to use two, because the only ones who survive the huge onslaughts at the beginning of a fight are the tank (wall) and the one standing directly behind it. Pretty lame.