heat engeneer

how to play : 

w a s d : to move

num 1, 2, 3 : to choose heater type 

gameplay : 

you have to heat all house blocks with minimum amount of energy and each heater takes different amount of energy

heaters        energy use        size

   lvl1                    20              3x3

   lvl2                    30              5x5

   lvl3                    40              7x7