Simple great strategy: Upgrade initial money and tower costs, Build Super Tower at the very end of the track and a poison tower at the start. Upgrade the Super Tower all the way, then the poison. Once you're their, build whatever the hell you want, because you pretty much have already won. :P Hope this helps!
 "mini Tower Defence (mTD)"){kind=icon}
 "The Next Floor"){kind=icon}
 "Vox Populi, Vox Dei(a werewolf thriller)"){kind=icon}