The glass is sad because it's empty. Your job is to draw a line to make the glass filled up with liquid and smile again! This is one of the best strategy games with is designed with a lot of addiction for both kids and adults. This draw line puzzle game needs your full attention to solve physics puzzle by drawing lines to save glass and water. Smiling water glass,puzzle game,draw lines,physics puzzle,water puzzle,casual game,hypercasual game,1 player,2D game,addictive game,kids game,adult game,fun game,online game,.io game,line drawing,fill the glass,solve puzzle