I loved this game 'Triple Town' on my phone, and I wanted to bring it's simple and yet very clever dynamics to Scratch. This is an initial release, so parts of the game are not finished. Place the 'next' item on the map in a free space, touch 3 together in a group and the last one to be placed is upgraded to the next tier. Points are awarded based on the buildings you have achieved!
full credit to griffpatch
