Yes you do.
you beat the game then give twisted wizard to Rowley
you have to beat it
Although Greg beats the game, you will still need to beat it. Get the Twisted Wizard Guide from Greg's locker at the school, then click the TV at his house to begin play. Click the Wizard at upper left before you click start. (see related question)
you have to set twisted wizard on easy mode (click on wizard) and then you have to beat the game.
Yes, in order to get the game CD and take it to Rowley's house.
You need to beat twisted wizard
You wont physically get anything in the game but Greg will stop playing and help you. You need to his help to continue the game so beat Twisted Wizard by getting the game handbook, do what it says and then Greg will help you and then you will be able to continue and finish the game.
yes, you click on the wizard hen the game comes on your screeen, but not when you build the walls, that is too late.
you have to go to the school and click on the locker that is whiter then the rest and put in the locker code: 9, 37, 15 then you will get a twisted wizard game guide which then greg makes you beat the game for him!
If the game guide says examine you must play the twisted wizard for greg. All you have to do is click on the tv, then click on the wizard to set the game on easy mode, then click start. You build a wall around the wizard, and when you see monsters you zap them before they get to close to the wizard. You must complete 3 rounds then greg will get up and say thanks for helping me play that game and then he gives you the game.
It's not actually supposed to be in the island, but Twisted Wizards is a video game Greg Heffley is addicted to. You must beat the game for Greg by clicking on the wizard before the game starts, or just click use on the Twisted Wizards CD. If you don't have it just use the first part of my answer. I hope this helped you!