A quite fun and addictive short and arcadey roguelike with very simple and easy to get control due to its original development also aimed at mobile. The gem-based economy and the random power-ups you get after each level helps keep things a little fresher between runs, and you are pushed into a risk/reward playstyle in order to keep up combos and earn more gems (Even if just for personal satisfaction, for some weird reason the rewards from them stop at a low cap) and when you get a good run and beat the boss, it's a great feeling...

...The problem comes with the "hard mode" you unlock after your first victory. I understand the intention of trying to give you more gems to unlock extra palettes, but I just can't shake the feeling its sole reasoning for its existence was "just fill the screen with more enemies lol" which just ends up being frustrating and a stain on the otherwise solid design.

Basically, just keep playing through Normal difficulty runs and don't approach the Hard mode unless you're an achievement maniac, you'll have much more fun with a breezy experience ideal for shorter periods.