Last Stand (PvZ)

Last Stand is the sixteenth minigame and is unlocked after beating adventure mode once and completing thirteen other minigames.

In the start, you get 5000 sun, and can choose everything you have(except Puff-shrooms, Sunflowers, Twin Sunflowers and Sea-shrooms)

Strategy
People just like to go with the Gloom-shroom build where one chooses Garlic, Marigold, Pumpkin, Lily Pad, Magnet-shroom, Gold Magnet, Coffee Bean, Fume-shroom and Gloom-shroomif he has nine seed slots, or add in the Tall-nut if he has ten.

Gloom-shrooms are chosen because they hace an 3x3 square AoE attack, and do a lot of damage, 4 Magnet-shrooms is enough to handle most situations, Pumpkins are for jumpers and zombies that appear from underwater.

Last Stand is pretty much used for Gold Farming, that means having a defence which takes up little space to have as many Marigolds as possible, while having Gold Magnets to collect coins automatically for you. This will get youabout 5-9k of coins, depending what build you use. For me, I get a solid 8.5k everytime a do my build.

If you want a good Last Stand strategy/build and a guide to get more gold, see curby's guide for Gold Farming on GameFAQs