Warbears

Intricate Hapland-alike. Use the different skills of four special agents (Kla, Lucas, Ryoh and Steve) to carry out the mission to save the bedtime bank.

Yes, just in case you found the puzzles in the Hapland series of games too simple, there's literally no end of tasks to carry out in this one (though it's a bit easier to remember which Warbear is which). Unfortunately, it's also easy to make mistakes which prevent you from finishing it - and the game, and the chief Warbear, don't always point this out.