A quick reminder: Fast levels are [6, 13, 19, 26, 32] Are is [8, 17, 27] Immune are [10, 21, 32] The boss levels are [11, 22, 33] You get wood every 7 levels. More information on the Home / About page If you have enjoyed playing Flash Element TD, or any of my other games. Or you consider yourself an addict, please feel free to make a donation.