I grabbed this one for free when they used to give it away on most websites.Game isn't too bad, you just defend the farm by killing cows, much like plants vs zombies only that the plants is just a farmer and the zombies are mad cows.

A few upgrades and unlocks, a few unlockable enemies, and that's about it.

It's worth giving it a shot, if you don't hate it straght away it can be completed in 2 hours or less, there's cheat codes which makes it a lot easier to unlock all the levels.

The last boss can be a bit tricky, but it's pretty easy in the end.
5/10