If you are familiar with Sokoban (and who isn't, at this point?), you should know what to expect here. Seeing it done in 3D with Minetest is a novel concept, and as short as the game was I genuinely enjoyed my time with it. Be warned--with 7 levels, the game is only 5-10min in length. If this game cost money, I wouldn't be happy with my purchase... but luckily it's free, so I can wholeheartedly recommend it to anyone who's bored on their lunch break!
With that said, I'd be remiss to ignore the places where the game could improve. First is level count, but more importantly level quality. There are 7 levels, but I think levels 5 and 7 are the only ones that really require the player to really stop and think to solve them. Granted, it's important to have simple introductory levels, but having only two "proper" puzzles is unfortunate.
I'd also say that while the graphics are nice, the game feels generally unpolished. There's absolutely no audio, no effects or feedback aside from boxes turning red, and the player jerks to a halt on every 'tile' even when the movement buttons are held. And when the final level ends, it just restarts with barely any acknowledgement that you beat it. These might not seem huge, but I believe that making a game feel good to play is almost as important as making it function in the first place.
I think this alright game could grow into a really great game if it's given more development time, and I hope it receives that time.