i think there should be a upgrade fully button because when you get a new building at like lvl 20, you have to upgrade it over and over + if u think so, so that the developer can see this.
and 5/5 just for the gold c(:
Beating Epic Yeti is not so hard. Just make Vigraf the Red and Kara the Slayer charge right away. When Epic Yeti comes, he will spend the whole time trying to hit them and will never be able to.
i think u should be able to upgrade glide because sometimes im so close to that one hill with diamonds then glide runs out and i crash. + if u think so 2.