The one-sentence difference
Pokemon Unite is a team MOBA about map control; this arena fighter is 1v1 about reads and combos. They share creature combat and almost nothing else.
Try the fighter side yourself via the APK download page. The Pokemon Arena 2D homepage breaks down the full build.
Combat style
Unite plays in longer team matches where positioning and objectives decide games. This game plays in short duels where one good combo can steal a round. If you like outplaying a single opponent up close, this is your game. If you like coordinating with a team, stick with Unite.
Cost and unlocks
It is a free fan build with the roster unlocked through play and zero purchases. Unite is free to start with a licensed store around it. Your wallet stays shut in both, but only this one keeps it shut by design rather than by restraint.
Which should you play?
Play both if you have the storage. They scratch different itches and neither replaces the other. But if your phone is old, your data is limited, or you just want fast fights with no account, the Pokemon Arena 2D APK download gets you into the arena in minutes. The homepage has the full breakdown of what the build includes.
