Kokuga (Shoot 'em Up)
Fun n' simple gameplay loop with a banger soundtrack that changes as you progress through a level or boss phases. I adore the somber aesthetics of this game too. Though, I'd suggest playin' this game on hardware. Just cuz in order to access your tools you'll need to use the touch screen consistently.
Sakura Samurai: Art of the Sword (Action-Adventure)
If ya want a slower pace game that rewards ya for being precise then ya might like this one. I get a tranquil feeling as I methodically play this one. Quick n' easy to pick up as well.
HarmoKnight (Rhythm Platformer)
I love how this art style oozes charm. The variety of different characters you can play as and the presentation as you progress though the levels keeps this game engaging. Cute jams too.