Great game!
It's quite easy though. Don't see how anyone can be stuck on it. For those who are... HERES A SPOILER OF THE WHOLE GAME!
When you go to town go to the house on the right. Tell the girl you want pie. Choose the 2nd option. Get the pie from the bin. Go to the top of town and talk to the man. Give him pie. Go to the manhole, to the right get the bowling ball. Go back up and go left. Get the ticket from the skeleton. Go down and left. Talk to the man and get a refund. Go to the carwash. Talk to the man until he washes the ball. Go the the manhole put the ball in the thing. Get the map and the fish. Go to the bottom of town talk to the man give him the fish. Go to the seaworld whale give it the fish. Get the bottle, go to the cobweb at the bottom. There are brown teeth. Activate left, right, top, right in that order. Do it again. Go down the hole. Activate the acid. Go the the cafe, activate the bin. Get a straw. Go outside press space. Go the the left activate the thing. Get the bottles from the pile and get a refill from the cafe by talking to the woman about the 2nd thing then activating the machine. Go to the left again activate the machine. Go to the woman buy the thing. Go out watch the stuffs. When you're in the castle talk to the man, play the game, talk to him again to give him the thing. Go through the door, then to the food court. Talk to the yellow man loads. Then white man. Then yellow man. Then white man. When you get the mustard go out and to the tech room door. Activate it. Go through and press loadsa buttons. Go back to the game and win it. Go to the morph's guard. Congrendulates!