New Structures:

• Family Tree - found in most overworld biomes

• Alteration Site - found in most overworld biomes

• Angel Altar - found at peaks and mountain sides

• Great Body - found underground in most overworld biomes

• Dungeon (Risus Styled) - found underground in most overworld biomes

• Research Lab - rarely found underground in most overworld biomes

• Maw Trap - found in most grassy and sandy overworld biomes as well as in the End

And more =]

New Mobs 

• Holder - a small critter that spawns near Risus structures. It will playfully sneak up on you to steal your held item and then run away with it laughing. Punching the Holder will result in it dropping the item.

• Maw - found in Maw Traps, it's a monster made up of a mouth and Maw Guts - a block that acts as its body. It will kill anything that falls into its mouth and can only be killed by destroying the Maw Guts

• Ophanim - a stationary monster that will smite down all creatures that come close to it. Can only be killed with weaponry made from Concentration Cores.

• Lover - a monster that will not attack the player. Instead it targets other creatures, turning them into Beloved versions.

• Stalker - a Beloved Creeper; it will get as close as possible to the player, inflicting Darkness and Blindness.

• Licker - a Beloved Spider; its attacks will apply Pleasure, a much more lethal version of Poison that also makes controlling your movement difficult. On death, summons Baby Spiders.

• Singer - a Beloved Enderman; when it sees player it will start "singing", causing Nausea. It cannot walk around but it can still teleport.

New Weapons, Tools and Equipment

New Tools and Equipment:

• Skin Armor - offers less Armor points than Leather, but each piece increases Health by 5 (2.5 hearts)
• Ophanim Wings - Elytra alternative, offering infinite glide durability - but using fireworks or Riptide will consume a lot of damage to it.
• Endless Pearl - a reuseable Ender Pearl; can store ten thousand of them as durability.
• Light Devourer - places Darkness.
• Hand of Greed - when in off-hand, increases block placement reach by 3.

New Weapon Types:

• Boomstick - explodes on hit, damaging both the attacker and the victim. Destroys blocks.
• Flamethrower - spews fire that works even on Fire-resistant creatures.
• Egg Sac - can be thrown. Summons Baby Spiders on impact that attack everything.
• Knuckles - lower base damage than Swords, but faster attack speed, with an additional "Lunge" ability
• Heavy Axes - combat oriented Axes, accepting Sword Enchantments.
• Scythes - higher base damage than Swords, longer reach, but much lower attack speed.
• Greatswords - higher base damage than Swords, slightly longer reach, with much lower attack speed and slight speed reduction. Can launch a slash projectile.

New Blocks

Risus adds a modest amount of blocks but most do have a function or mechanic. Tissue can decay into Bone; Skin can grow Hair; Zit pops; Remains can be smelted; Blood interacts with other liquids and can be dangerous as well, etc. Of particular note are:

• Depth Vase: a new storage container that can store between 1 to 81 stacks of items depending on how deep it is in the world. It has no UI but can be interacted with manually or with a Hopper to insert and extract items.
• Maw Guts: a new storage container that has 54 slots and can pick up items in a 3x3 area above it.
• Alteration Catalyst: a new crafting medium; allows the conversion of certain vanilla items into Risus ones.
• Display Notches: they are a less intrusive alternative to Item Frames, allowing the display of items in various positions and rotations. The scale of flat items displayed matches that of blocks, meanwile 3D items (such as blocks) are at a one eighth (1:8) scale.

Planned Future Content

The below are ideas that are planned to be added in future versions of the mod. There is a chance some of them won't make it in, or that their exact execution may differ.

• More Weapon Types: Whips, Momentum Hammer and Summoning Rituals (think of Terraria's Summoning class)
• Corruptions, which are more powerful versions of Vanilla Enchantments, but they will also have downsides in return
• Assimilation, a method to make certain items a part of your body (e.x. what if you don't need to use an item slot for a pickaxe and instead the pickaxe can be assimilated into the flesh of your default hand)
• Bosses and possibly a Final Boss (similar to what the Ender Dragon is supposed to be for Vanilla MC)
• and so much more... =]