If you don't have a scroll wheel, then you use the space button instead. Also you can skip levels, you just click on the level you want to play and you can play it.
guys, your not supposed to hit the enemy every time when doing defense missions, your supposed to level up your character and train your allies then do defense missions so you can win
I don't usually like tower defense games, but this one is the exception. There are, however, a few problems with the game, like it being very unbalanced. During the game i found no reason to buy other towers because the 3 starter towers work fine. Also its very long and tedious. There is like 40waves per level and about 10seconds per wave. ans the worst part is that you have to wait a little bit before you can press next wave, remove that and you got a 5star game. But for now 4/5
wtf is happening at the first boss, i couldn't do anything and then there were like 50 skateboarders below just murdering me with there green lasers...