I usually download tons of otome games all at once and keep a pile of resources saved up. I only pick them up to play whenever I feel like it. I've tried so many games, yet very few have I actually finished all the way through.
If I play an otome and then have my attention captured/diverted by a different otome game then I risk losing my motivation to finish the original one that I had been playing at the time.
Hence, it's definitely best to only focus on one until I'm actually finished with it.
i focus on only one game. makes it easier to remember the plot and not get it jumbled up with another game. plus it feels more satisfying to finish it and then start the next one XD
I'm playing them one by one.
That's because it takes a while, so I end up forgetting the details, and because I end up prioritizing the game that was the most fun out of the ones I'm playing at the same time.
Most of the time, I only play one game until I've completed it completely and collected all the items. But there have been times when a game bored me so much that forcing myself to continue playing would have been painful. In such cases, I opt to play another game to alleviate that feeling.