Lava 'N Snow
Lava 'N Snow is a fangame of Fire 'N Ice for the NES, featuring the same characters and base mechanics, but adding in tons of new mechanics. Fire 'N Ice has moving umbrella enemies in some boss stages, while Lava 'N Snow makes them still and appear throughout the majority of the game, as well as still keeping moving umbrella enemies. Lava 'N Snow uses mechanics that exist in Fire 'N Ice but were never explored, like ice not melting if it starts on a fire jar, or gravity objects not falling until Dana goes past under them. It has even more custom enemy types, like shield enemies, that can't be hit at the sides, and beanie enemies, that can't be hit by ice or snow. Speaking of snow, that's another custom mechanic, and it's fragile, so you can only step on it once before it disappears, as well as only pushing it one block at a time. You guessed it, lava is also another custom mechanic, and it always spreads as far as it can horizontally if it's on the ground and down otherwise. It can only be stopped by stones.
Demo #1: [First 3 Worlds] Summer 2026
Demo #2: [First 6 Worlds] Fall 2026
Final Version: [All 11 Worlds, Cutscenes, & Level Editor] 2027