This is a level I made on SMBX 1.4.5, which is a level with fire and ice theme. The idea in this level is inspired by 6-8 in Donkey Kong Country: Tropical Freeze, which also has a similar theme, including the interaction of fire and ice. Though this level isn't too long, but it took me long to finish this level, and I hope you will like the idea and gimmicks related to interaction of fire and ice in this level.
Download Link for this level (need to be open with 1.4.5 Version Level Editer to play): https://www.mediafire.com/file/b5el5hmn9qd9sbf/Freezing+Burn.rar/file
And this is a test level which is heavily inspired by Celeste, like green things which offer you an extra chance to jump/dash, and screen scroll between different area of the level.
This is a box-pushing riddle with a horrible atmosphere. It isn't a hard riddle, but it may be a good way to introduce other riddles based on this gimmick……?
This is a level I am still making currently, which hasn't been finished yet, but some details of the scene took me lots of time to polish. Like moonlights, falling leaves, swaying flowers,little animals like butterflies, glowworms, birds, frogs(Birds and frogs can even make sounds) and so on. Though they are just decorations which can't influence both player and enemies, I think creating detailed atmosphere is a good way to make player immersed in the level.
In general, I hope you will like these ideas and gimmicks.