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: LEGO Universe
Alt-itis: A character can join one of four factions, and you can't change your mind later on. Conveniently enough, each player is allowed four characters.
Monument Opening Music Loop 2 (no available YouTube link, sadly), an orchestral track which builds up in power, with the feeling of something truly great on the horizon. Sadly, it was a Wasted Song in beta testing.
Battle Music, an intense electronic track that changed based upon the intensity of Avant Gardens Survival.
Pet Rock, a light and relaxing piano/strings/marimba track played at Pet Cove.
Narrator: "His foolhardy attempt to control creation through destruction merely created chaos. And creatures of chaos have no master."
The Spider Boss then turns on Baron Typhonus, who realizes its intentions a second too late. He tries to flee from it, but the Spider Boss's foot snags his cape. The last we see of either of them, the Spider Boss is pulling a terrified and struggling Baron Typhonus into the Imagination Nexus, and then the bright blue energy turns purple as it is mutated into the Maelstrom. This is easily one of the Darkest and Edgiest moments in LEGO history, and the background music certainly doesn't help.
During the Spider Queen boss battle, she shrieks in agony whenever you smash one of her Dark Spiderlings.
Upon completing the "Something in the Maelstrom" mission, you are greeted with a vision where your Minifig is sent to what appears to be an elongated staircase in the middle of a Maelstrom vortex. The glowing red image of a skull accompanied by deep Evil Laughter flashes before your eyes as, in the distance, you see a silhouette of Baron Typhonus atop the staircase. Then, tendrils of Maelstrom energy lace out in a double helix around the staircase as the silhouette grows closer and closer. Just before the Maelstrom tendrils slam into your Minifig and Smash to Black, Typhonus towers above you, and you can see that his entire figure is pitch-black, like a silhouette, with his only visible features being the glowing red outline of a skull. This served as confirmation to Master Fong Shader's words: Baron Typhonus is alive, and he is now the Darkitect!
In-game, you only hear a tiny fraction of Strombie Combat. Granted, what is included is remixed in a way that makes it seem much longer, but most of the original track is cut out of the game.
Similarly, Spider Cave has three bursts of furious intensity in the full track that, for some reason, are entirely cut out of the song when played in Avant Gardens Survival, Battle for Nimbus Station, and even the Spider Queen boss battle, where it would have made the most sense to include them!
In beta testing, Monument Opening Music Loop 2 could only be heard while speaking to a specific NPC, Rusty Steele.