The puzzles in the higher levels are heavily preset to lose. The game will cheat the player to push them to buy more energy, bonuses or whatever spells are needed to get through the puzzles and levels.
An Awem representative has stated that specific chargers are indeed rare and have suggested that the game is meant to be played occasionally.
I have been playing daily for almost 6 months and I have found only a handful or so of these "rare" chargers. The drop rate on these needed chargers is basically non existent. I havent found a useful charger in over a month. Some chargers I have needed since the start of the game.
When I first started playing, the game was fun, entertaining and I thought at the time, challenging.
Too many puzzles now have become far too difficult with some puzzles that are impossible to win without the use of multiple bonuses. I just dont find this type of game relaxing.
Its sad that the Awem developers have really taken the fun out of this game. I have tired of chasing after specific chargers which are that "rare" and there are too many times where I am given charger/s and collection items over and over that I have already collected far too many of to be of any use in my lifetime.
I have lost hope that this game will ever be updated with a more honest play balance and not just programed to only empty my pocket with little progress or even more important, some needed fun, in return.