This is a thrilling tower defense game that you can enjoy here, for free. Gemcraft is unblocked. Gemcraft is powered by Flash technology to work without trouble in most browsers. Gemcraft has received 14,527 plays and has received a rating of 8.5 / 10 with 138 votes. Did you like playing Gemcraft? Then also play our other tower defense games or Vera Towers 2 and Calabash Bros.