This app was mentioned in 25 comments, with an average of 1.36 upvotes
https://play.google.com/store/apps/details?id=com.mu77.cm Card Monsters
Mabinogi Dual: https://play.google.com/store/apps/details?id=com.nexon.devcat.mabinogiduel.global
I played both of those for awhile.
Card Monsters is a pretty decent portrait mode card game.
Weird https://play.google.com/store/apps/details?id=com.mu77.cm they didnt even bother changing thr description. Wonder who copied who.
Can't believe I recognized the art style
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Card Monsters: 3 Minute Duels | 4.3 rating | Free with IAP | 500,000+ downloads | Search manually
> 3 Minutes, to Unleash your Monsters! Card Monsters is a fast-paced strategic card game. Enjoy challenging and innovative gameplay with simple mechanics that allows for an intense duel! Battle with 8 monsters and 8 items, be ...
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Card Monsters is played in portrait.