Common

• snowGravity: Snow layer falls like sand. [Performance impact: low]
• snowMakingIce: Falling snow becomes ice when it touches water. [Performance impact: none]
• snowAlwaysReplaceable: Snow layer can always be placed by other blocks, as long as it is not full. [Performance impact: none]
• thinnerBoundingBox: Shrink the collision box of the snow layer. [Performance impact: none]
• snowNeverMelt: Snow layer never melts. [Performance impact: none]
• snowSpawnMaxLightLevel: Maximum light level for snow to spawn. [Performance impact: none]
• snowPersistMaxLightLevel: Maximum light level for snow to not melt. [Performance impact: none]
• snowReduceFallDamage: Reduce fall damage when landing on snow, depending on the snow layers. [Performance impact: none]
• sustainGrassIfLayerMoreThanOne: Prevents grass block from turning into dirt when snow layer is more than 1. [Performance impact: none]
• sneakSnowball: Sneak+use on snow layer to obtain snowball, consuming one layer of snow. [Performance impact: none]
• fancySnowOnUpperSlab: Snow layer on upper slab will render snow overlay on the side of the slab. [Performance impact: low]
• mobSpawningMaxLayers: Maximum layers of snow for mobs to spawn. [Performance impact: none]
• snow-cover.placeSnowOnBlock: Snow can be placed on some blocks to make them snow-covered. [Performance impact: low]
• snow-cover.placeNaturally: Snow can be placed on some blocks not only by player, but also from snowfall or world generation. [Performance impact: low]
• snow-cover.replaceWorldgenFeature: Replace the vanilla world generation feature to also generate snow-covered blocks. [Performance impact: low]
• snow-cover.retainOriginalBlocks: If you want to uninstall this mod, you can restore snow-covered blocks to their original blocks via random ticking. [Performance impact: low]
• accumulation.accumulatesDuringSnowfall: Snow layer accumulates during snowfall. [Performance impact: medium]
• accumulation.accumulatesDuringSnowstorm: Snow layer accumulates during thundering. [Performance impact: medium]
• accumulation.maxLayers: Maximum layers of snow that can accumulate. 9 is unlimited. [Performance impact: low]
• accumulation.snowAndIceMeltInWarmBiomes: Snow and ice will melt in warm biomes. [Performance impact: low]
• accumulation.naturalMelting: Snow melts with time if its layer is more than 1. [Performance impact: medium]
• integration.accumulationWinterOnly: If you have mod that adds seasons, snow accumulation only happens in winter. [Performance impact: none]

Client

• particleThroughLeaves: Generates snowflake particles under snow that is above leaves. [Performance impact: low]
• snowVariants: Some snow-covered foliage will be rendered differently. [Performance impact: low]