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: Robot Unicorn Attack: Heavy Metal Edition
Colbert Bump: The game got even more plays when it was featured on an article in The Escapist. Similarly, the amount of people checking the original song out after they've heard it here is astonishing.
Hell Is That Noise: In the Heavy Metal edition, the screech of the piranhas that appear every 5,000 points.
It's Easy, so It Sucks: Some fans of the original complain that Evolution (the Facebook version, at least) makes the game too easy with its enhancements. It really is still quite difficult to get a high score even with the enhancements, though.
A pity that the Evolution replaced it with a much less magnificent harp strum.
The song itself. By the second time you've played it, if you're not singing along with the chorus, then you have no heart.
Older Than They Think: A lot of people think the song "Always" was written just for this game- it's been around since the '90s.
Paradoxically, the song is also Newer Than They Think, considering how many people think of the song as eighties synthpop. In this case, the confusion might stem from both the fact that Erasure first came to prominence and had many of their hit singles in the mid-late 1980s, and that the rest of the game is simply dripping with 1980s aesthetics, what with all the vibrant pink/rainbow/pastel colour scheme, the overall 'Saturday morning fantasy cartoon' feel of the game and the TRON-style graphics of the menu screens.