To delete the app from your iPad, simply tap and hold on the game's icon until they all begin to jiggle. Afterwards, tap on the "X" in the upper left corner of the game's icon. Now, when you say "cloud account", I can only *assume* you are referring to iCloud. If so, go to Settings - General - Usage - iCloud - Manage Storage and then select "Show All". *If* the game appears in the listing, tap on it and then tap on "Edit". Now scroll down to the bottom and select "Delete All" and then tap on "Done" afterwards.