If you are bored of the usual ways of playing Minetest games, look no further: it's a very stable minigame, it has simple graphics that let you keep your focus when solving puzzles, and, last but not least, features a really innovative mechanic, that opens many roads for interesting and fun gameplay! The story elements are well spaced out, and will "guide" you through the various challenges you'll face in the lab. Its mechanics are simple in appearance, but are actually pretty clever, considering they merge together player properties with the node- space; a feat few games try to pull off (save parkour ones).
It was sadly a bit short of an experience, just when I was starting to get the hang of it, too; but I suppose we'll be seeing further levels down the road as the game implies. It seems to me this is a very new gameplay- style for Minetest, so I'll wait and see if more can be done with it in the future.
Post- Jam development should focus on:
showcasing all the different possibilities the mechanic offers, in more levels;
maybe change the player's skin to something else;
polishing player experience (e.g. maybe add some more story elements to keep the player's interest, maybe add more worldbuilding elements, maybe add a boss fight)