Gastropod

	Classic	Expert	Master	Legendary (For the Worthy)
Life	220	440	660	880
Attack	60	120	180	320
Defense	22	22	22	22
Knockback Taken	80% (High)	72% (Med)	64% (Med)	64% (Med)
Coins	6	15	15	21

The last column is Master mode in a world made with the For the Worthy seed. Its numbers were measured in the game, not computed here.

For one player in a world before Hardmode. Expert and Master scale life, attack, knockback and coins by the game's own multipliers.

Coins: each kill rolls the coins from 80% to 175% of this value, then rarer extra rolls can add more.

Classic

Item	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Gel	10 to 20	100%			In a world made with the Celebration Mk 10 and Drunk seeds, but not the Remix or Not the Bees seed
Gel	5 to 10	100%			In every world not made with the Celebration Mk 10 and Drunk seeds together
Chocolate Chip Cookie	1	1/75 (1.33%)	52	172	Not from enemies spawned by a statue

Expert

Item	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Gel	10 to 20	100%			In a world made with the Celebration Mk 10 and Drunk seeds, but not the Remix or Not the Bees seed
Gel	5 to 10	100%			In every world not made with the Celebration Mk 10 and Drunk seeds together
Chocolate Chip Cookie	1	1/75 (1.33%)	52	172	Not from enemies spawned by a statue

Master

Item	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Gel	10 to 20	100%			In a world made with the Celebration Mk 10 and Drunk seeds, but not the Remix or Not the Bees seed
Gel	5 to 10	100%			In every world not made with the Celebration Mk 10 and Drunk seeds together
Chocolate Chip Cookie	1	1/75 (1.33%)	52	172	Not from enemies spawned by a statue

Chance is per kill. Kills for 50% and 90% is how many kills give that chance to see the item at least once.