This app was mentioned in 6 comments, with an average of 3.67 upvotes
Recently played Timing Hero Colosseum & Raid (yes, that's literally its name) for the first time. I know, I know, it's by no means a new game. But I've been kinda hooked on it for a while now. Yes, it's a grind. But there's a lot of characters to unlock, and I'd like to see what happens once you beat the game.
Download link: https://play.google.com/store/apps/details?id=com.buffstudio.timinghero
Talked a bit about the game and uploaded it to YouTube in case you want to see before downloading too (and left a shout-out to AndroidGaming in the description ;) ) https://www.youtube.com/watch?v=8hfecHv1LUs
You should have a look at Timing Hero. It's also in monochrome green, but seems to be way easier on the eyes.
Pretty sure it's this
https://play.google.com/store/apps/details?id=com.buffstudio.timinghero