Mary, Mary, quite contrary,
How does your garden grow?
Neither silver bells nor cockle shells,
It's something that could explode.
As time counts down, or is it up?
Try to keep your record clean.
The task's not as easy without some luck,
For there's no yellow submarine.
I'll pull a face if you're a disgrace,
So get your irises in a row.What am I?
I'd like the answers to give explanations for how each clue fits. The first two lines are a single clue. Each other line is its own.
Answer with clues:
Minesweeper
Mary, Mary, quite contrary, How does your garden grow?
Minesweeper on Windows 7 and later features the option to change the appearance to that of a garden.
Neither silver bells nor cockle shells,
The flowers in the garden theme are daisies.
It's something that could explode.
Mines
As time counts down, or is it up?
The game timer counts up.
Try to keep your record clean.
Cleaning out the mines. Also, keeping your record as clean as possible would also refer to the win ratio.
The task's not as easy without some luck,
Guessing is sometimes required. "As easy" is also wordplay on XYZZY.
For there's no yellow submarine.
The mines have the appearance of naval mines, which would destroy a submarine.
I'll pull a face if you're a disgrace,
The original version of the game has a yellow smiley face that pulls faces, one of them showing when you lose.
So get your irises in a row.
Flags.