Very interesting take on the special object, I'm a big fan of elevators myself.
Goods
The game takes it's own unique spin on the idea of having a door as the special object, And has the mechanics revolve around using the different buttons to operate your elevator. The mechanic is nice and makes a lot of sense to use. I also like elevators a lot.
Improves
Sadly I did have a couple of negatives, Mostly around the visual style of the game. I was really looking forwards to maybe a pixelated style or a solid style like the cover of the game (It's actually why I clicked onto it), But it seems like the actual game itself is slightly devoid of visuals. The only interesting visuals I saw in my time playing were the passengers and I felt like they looked a bit generic... The transition between floors also feels a bit rough. Also there was a minor bug where people wouldn't leave the lift.
Overall I'll give the game maybe a 4/10? Although it was the lack of visual elements that let me down mostly.