things that can make this game better:
(1) Fast Forward feature or increase the gravity speed because it takes forever to complete more complex levels
(2) A way to erase line (could be limited to 3 erases per level and could be earned)
Nice game otherwise
played on Hard difficulty like a boss...ironically i find hard easier than normal, got 3x gems on the first 6 levels with little difficulty when compared to on normal
For those having problems with lv 4 try what I did. I cant give you the exact placement but here's the jist of it.
Reset all skills and focus on flower and aqua skills only. Upgrade flower and aqua to skill lv 3 and 2. Focus on placing more flowers than aquas until last wave.
Upgrade flower to poison and aqua to sprinkler. Call waves early if low on money it helps. The poison flowers are extremely OP. Save your powerups until final wave just in case.
monsters are to overpowered on stage 4, i find it annoying that I have to waste money on the fusion plant if i want to get my plant to upgrade lvl3+. That money could be spent on upgrading or buying more plants.