Hmm, there's no other Kemco game that's like Elio, but if you want to try some more, I'd say start with the free ones: Asdivine Dios, Asdivine Menace, Asdivine Cross, Revenant Dogma, Glorious Savior. You could also try Machine Knight, or Band of Monsters, they're both free but a bit older (but they're both really fun.)
If you have Amazon Underground there's also some free Kemco games there, including my favorite, Symphony of the Origin.
So there's lots to choose from, but most of their games are more JRPG. But I'll bet you will enjoy them.
That's the greatest way to get Kilari aswell.
You get 3x the best items and sell them for extra Kilari.
Right now I could not find a HUGE PKilari boost, only the 10% and 30% party boost. So 3x more items is definitely the best option!
Also it gets much easier to farm higher stages if you swap.