These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Space Invaders
Genius Bonus: The names for some of the stages in Infinity Gene.
The very first stage, "Common Descent" is like that of an old-school arcade space invaders game. These invaders are the common ancestor of the other enemies you will soon face, hence the other enemies share a common descent.
The final stage (after the Final Boss), "Back Mutation" has you fight a single lone invader in an old-school arcade format. A back mutation is a mutation that reverts a gene back to its original self.
"Struggle for Existence" has a Boss Rush of 8 or so minibosses before encountering the real boss itself.
