Boxxle II came out for the Nintendo Game Boy in 1991.
It’s a straightforward continuation of the Sokoban theme, with more levels to push boxes around in.
Other than more levels – and there are 120 in this sequel – there’s not much else new here. No new graphics – other than the boy/girl cut scenes. You do get a choice of three different pieces of music at the beginning, which is new.
Like in the first Boxxle there are three slots in which you can create your own levels, but there’s no way to save them when you switch the power off.
Boxxle II is still a great game though.
More: Boxxle on Wikipedia