There were indeed some movement and gameplay inaccuracies.
When I push the box in the wrong direction to the wall I have to restart the level because
I cant move it to the right place anymore.
Also when I move through a portal I expect that Iīll leave another one and dont
get placed in the middel of a room. There is no sense that Iīve to reach (the center of) a box
to get teleported to the next level.
Such simple games shouldnīt require any explanations.
The game should respawn the box to the start position when I moved it to a place form where I canīt push it anymore to the switch.
When you dont let the player leaving an exit door after moving through a portal
there should be at least some kind of effect around the player as indicator for
the teleporting. Instead of an huge box as level target it would be better to
use another portal with a special look.
Such games have to be self-explanatory. To reach that add real button models for
your switches and tubes instead of arrows as indicator for an hole in the wall.