Sometimes they can be fun, the issue in general is a balance on grind and reward. Often Devs go too far on the grind or difficulty on the mini game and it becomes extremely fucking tedious. If you're not going all out of your mini games to make them fun and interesting which is nearly never, they should only require one hand.I rather they not be in game. I always opted to skip them if possible.
I find them annoying especially if it is timed and there is no instruction on what you are supposed to be doing and time runs out. And mini games don't always work correctly for one reason or other.
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