Tell us a bit about a biome you've had in mind. Try to add a description about the theme of the biome, what types of enemies would inhabit the biome, what kinds of dungeons/lairs would be in the biome, what class might be for that biome, etc.
A biome would be an area of Nuclear fallout.
The biome that has a new uncommon liquid called Waste. When touching waste players will either receive a random buff or debuff, mostly debuff, (Examples: energy drop, health drop, movement speed boost, 15% damage buff/debuff, jump boosts, etc.)
mutant like mobs would have their body parts hanging out of them (Ex. hand hanging on top of a head) have green/yellow liquids flowing out of their mouths. some mobs might be faster, some might be able to climb walls or other type of "Super powers" you can think of.
Some examples of dungeons/lairs you would find in this biome or nuclear power plants, giant craters, and Destroyed buildings.
A biome that would be a really deep hole in the treasure isles where you could go down to the bottom and visit giant squid lairs.
All the mob would be fish themed and very few would be able to go on land. There would also be volcanic vents that had lava-resistant enemies in them. There would also be giant angler fish instead of shadow giants. It would be sort of like the mariana trench in that it would be really deep. It would open up to a huge underwater lake when you went down the entirety of the hole. All the enemies would be able to swim unlike those underwater guys in the treasure isles.
The class for it would be some kind of creature from the black lagoon type guy who had a trident melee or something.
I have other biome ideas as a blog post.
The Towering Forest
A biome that featured a lot of enemies that could actually fly as well as ranged enemies. There would be many huge trees that could be climbed up either with springs or parkour.
There would be some nests on branches that housed lots of birds and some eggs that could be harvested as materials. There would be enchanted wood and on the ground there would be spiders ad plants. The plants would be the enemies that shot ranged attacks, the spiders would be like any other spider enemy, and there would be birds that could actually fly and dive bombed the player to attack.
Some ideas for dungeons and lairs would be a bigger than normal tree that was hollow with going on top of the tree to fight the boss, some giant nests that you could go inside and fight a giant mother bird that spawned birds, as well as a huge lake with some enemies that could actually swim around in the water like in the Deep biome mentioned above, and maybe a huge spider web that you had to climb up to get to the boss.
A really high biome with snowy type regions on the very tops and mostly brown rocky terrain. It would be so high that you could die from falling off of it. Inside the mountain there would be different caves with rock/ice enemies such as boulder enemies. The higher parts would spawn more golden souls and magic find would increase the higher you got. At the top of the mountains there would be boss levels involving you fighting a giant rock monster that would be a lesser version of a shadow titan. The class for it would be a rock climber or sherpa.
I don't know if this would count as a 'Biome', per se, but I'm suggesting it anyways.
NPC Villages. And the NPC's don't try to murder you instantly. Also, animal taming.
Not a biome, so much as a new form of shadow tower. It functions the same as the shadow tower, except there is only one room. Instead of multiple floors, you instantly go to a boss chamber, each boss extremely difficult to make up for the missing dungeons and arenas.
BOSSES: Floor 1:Chaos empowered ice mage. "Used to be a simple and quite trovian, untill the darkness overtook him. Beware, for he knows how trovians think, and can respond accordingly." Has little health, (as much as hard spike walker.) but deals out high damage and has a one-shot attack. Upon defeat, you are granted 100000 of the resource of your choice.(Not including forging items, except for flux and glim.)
Floor 2:The 'Anti-matter menace.' " Formerly known as the scar of the everdark, this pseudo god has come to make his mark on the galaxy. Literally, that sword will leave a scar." Constantly moving, slashing anywhere in the room with the sword of the eclipse, which can cut anything, anywhere. Upon defeat, you are granted 10000 golden souls. ("Which we can only assume he obtained through 'poker and purge'.)
Floor 3: The 'Magus gambler.' "Bored of simple poker and purge (A game he plays, where instead of money you bet souls. Truly horrible.), The chaotic god of magic itself created this spire of which he awaits a truly strong challenger, capable of defying death." Powerful and skilled in magic, He is never touching the ground, making this fight unbearable for those stuck with melee weapons. Better hope you've got a high jump stat, because he will undoubtedly stay high in the sky. He will summon sentient magus crystals, which will float toward you and fire lasers. When destroyed, they will float toward you in a kamikaze attempt. When defeated, he will grant you permanent +10000 health, 25 magic find, and 1 chaos factor,as well as the "Magus Master" Stellar Aura.
Final Floor: The 'Embodiment of the Moon' "The supreme ruler of the moon has come to fight worthy challengers, just because his brother asked him to. A true test of skill, you will never (And should hope not to) see what he can truly do to you." The god and governor of life in it's entirety, this is truly the ultimate test. Upon entire the room, the player is granted flight, and 170 increased movement speed, which is definitely needed to even hit the Grand Lunar Mage. Constantly opening portals, health sapping lasers will be very diffuclt to dodge. Upon reaching 1/17 health left, he will stop moving, and start charging a undodgeable burst of energy, and the player(s) must defeat him in 45 seconds before the shot is fired,defeating everyone in the room. Upon defeat, he will grant you the following: Lunar magus weapon set, grand mage hood, celestial stare (mask), a class gem, (Only once, afterward replaced with a trove of wonders) and the aura 'Spirt of the warrior's greatest war cry'
And that's the magus spire.