Board Thread:General Discussion/@comment-151.77.66.151-20130606180331/@comment-5056929-20130820123903

Pretty sure BTD6 will exist one day but judging by all the spinoffs and the effort NK puts into the updates of BTD5 plus the spinoffs (deluxe, ios, battles, monkey city, etc.), it will be released probably later than ever before. If it isn't released three years from now, I wouldn't be surprised.