Puzzle Monkey

Puzzle Monkey is a single player, keyboard controlled, Soko-Ban variant.

The story here is that there are crates of bananas on a plantation somewhere that need sorting which, in this case, means pushing crates onto red 'X's.
The game was published via download from the developer's web site, it had one hundred levels. The player had to pay a registration fee for which they received a code to unlock the full content.