I love the idea: simplistic and relaxing at the same time!
I feel like some features are still to implement in the game for example, an autofill in the altar that presets an undiscovered leaf, being able to chose the tier of the leaf you're picking or the above-mentionned bonus for the completion of any tier x3
Besides, this game is fun to play
I'm currently on top score, this game is fun, though I had two games: One while I had the time to buy every skills and ended at wave 31 and one while I just had to buy the 5th weapon, the good skills (reparation lvl 3 and reload lvl 2 with other skills lvl1) while I ended at wave 14 as I rushed the reparations
 "Ultimate Five-Leaf Clover"){kind=icon}
 "Dude and Zombies"){kind=icon}