So I know that old school stuff is the stuff I normally do, but today I started playing in a 5e game one of my friends is running (the first game they are running actually!) and I'm a slightly modified dark elf thats actually a roach person so I thought "why not make stats for invertebrate races" so that's what this is.
Anything not noted in the racial stats is assumed to be the same as a human (so default). Also, while these are just referred to as cockroaches and worms, they are supposed to be intelligent people versions of them, with it assumed that they can manipulate things like a person.
Ability Scores Cockroaches get +2 to Constitution and +1 to Dexterity
Improved Darkvision Cockroaches are able to see in dim light up to 120 feet as if it were bright light, and in darkness as if it were dim light.
Sunlight Sensitivity Cockroaches have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when they, the target of their attack, or whatever they are trying to perceive is in direct sunlight or otherwise bright light.
Blattodean Resilience Cockroaches have advantage on saving throws against poison, and when they drop to 0 hit points but are not killed outright they can instead drop to 1 hit point. Cockroaches can eat anything and everything.
Fragile Exoskeleton The hit point rolls of a cockroach are made at -1.
Biting Mandibles Cockroaches have a natural weapon attack in the form of a mandible bite, which they are proficient in and deals 1d4 piercing damage + 1d4 poison damage if the victim fails a constitution save.
Languages In addition to Common, cockroaches are able to speak with mundane and monstrous cockroaches of all kinds, and can speak Undercommon.
Ability Scores Flies get +2 to Dexterity and +1 to Constitution, -1 to Charisma
Compound Eyes Flies have proficiency in the Perception skill.
Flight Flies are able to fly at a speed of 20 feet, and they can hover in place.
Fragile Exoskeleton The hit point rolls of a fly are made at -1.
Acidic Vomit Flies have a natural "weapon" attack in the form of their acidic vomit. They have proficiency in this attack, and it deals 1d6 acid damage, and functions like a flask of acid. Additionally, they can eat anything and everything.
Languages In addition to Common, flies are able to speak with mundane and monstrous flies of all kinds. However, when they speak Common it is very hard to understand them.
Ability Scores +1 to Strength and +1 to Wisdom
Blindness Worms are eyeless and thus cannot see, but they have tremorsense out to 30 feet around them.
Digging Worms have a "walking" speed of 20 feet, but have a burrowing speed of 35 feet. Worms can eat dirt, and thus do not require rations.
Dirtcunning Whenever you make any sort of check relating to caves, burrows, valleys, or any other sort of natural earth construction, you double your proficiency bonus when adding to the roll.
Languages In addition to Common, worms are able to speak with mundane and monstrous worms of all kinds, and can speak Terran.
Ability Scores +2 to Dexterity, +1 to Constitution, -1 to Charisma
Size Fleas are Small in size.
Speed Fleas have a walking speed of 35 feet.
Low Light Vision Fleas can see up to 60 feet in dim light conditions, but cannot see in conditions of darkness.
Flea Nimbleness Fleas can move through the space of any creature that is of a size larger than them. They are able to long jump without moving 10 feet first, and can jump to heights of 6 + their Strength score.
Fragile Exoskeleton The hit point rolls of a flea are made at -1.
Haemophagous Fleas can heal themselves by sucking the blood from creatures. For every hit point that they suck from the victim, they heal 1 hit point, but unless the victim is held down or is willing they are able to make strength saves to shake the flea off.
Languages In addition to Common, fleas are able to speak with mundane and monstrous fleas of all kinds, as well as all sorts of haemophagous monsters.