I bought this game on the basis of its introduction, despite having read reviews arguing that the controls were impossible and thus the game near in-playable.
I'm no video game expert, and detail-controlling the actions of the characters was always my least favourite part, the story and the puzzles my favourite part. Still, I found the controls managable. They were not bad enough to ruin the game, although sometimes I've had to try to do things more than once before something actually happens. All the controls use the stylus, and apparently there isn't much difference between "clicking", "holding", and "dragging a short line".
I've enjoyed this game, much for the adorable-ness of the evil little minions. They're not very nice creatures (bash! burn!), but they are actual characters, not just little pixel dots with names. And the minion master often brings a laugh.
"Try to sound a little less like a herd of marauding wildebeest..."
"With so many explosives about, don't feel you need to be subtle about it. And I know you Minions are especially good at not being subtle!"
"Blaze! If anything like that happens again, I'll make you eat Stench's feet, understand?"
If you like dark humour and medium-difficult puzzles, then this is a game for you. The controls can be annoying, but they don't ruin the game at all.