Use your unique engineering knowledge with slime and stones to make the greedy boss do their jobs ! Construction tower and slime and stones using the stone according to the request of the boss, or set up the desired places.Happy Engineer is a challenging and fun physics based game . When you get stuck in the game you can get distance help or clue. Take three stars when you pass the sections . A successful engineer deserves it ! Game features:     • Choose your material. Choose which material to put into the construction tower and successfully complete the task given by the boss.     • Multi-stage levels. Play fun and creative levels that include multiple stages, watch out for the Coins goal that the boss puts.     • Learn from your engineer friend what will help you with slime and stones in the game. Complete the cheapest way to skip the tricks     • Leaderboards. Show who is the best in the global leader boards.     • Free Download