Kingdom Classic vs Plants vs Zombies
Kingdom Classic
Kingdom Classic is a pretty challenging and yet entertaining, 2D game that also happens to be one of the more innovative tower defense games in recent years. Developed and published by indie companies, this game puts you in the role of a crown-totting king or queen who is setting out to find a suitable spot to settle down and build his or her own kingdom from the ground up.There aren't a lot of kingdom building in this game though. Aside from upgrading your main "base" which starts off being a simple campfire, you will only build and upgrade certain structures like farms, walls, and towers. The game also uses a really simple coins-based system where you rely on the coins you earn to do practically everything, from converting wild men in camps into your kingdom's loyal subjects to powering up special stats-boosting shrines, to unlocking new stone upgrades, and even to upgrading your very walls.
Your kingdom will be under constant attack by creatures from otherworldly dimensions every night, and hopefully by then, you would have some defenses up and ready. These creatures will become increasingly harder to kill, more in variety, and more in numbers, so you will need to ensure that your kingdom's defenses are sufficient to meet the threat.
Due to its difficulty, you might want to check out some of the guides out there after trying a round or two on your own, just so you won't pass up on this amazing game. Even with the guides though, you will still need to put in a good deal of effort and strategic thinking just to make it to Day 50 let alone Day 100. So, if you're a fan of tower defense-like games, don't mind pixel art, and enjoy a good challenge, Kingdom Classic is an indie game you will want to buy.
Plants vs Zombies
Plants vs Zombies is a whimsical tower defense game that places you in a unique position, mainly by planting a wide variety of plants on your lawn, to counter the advancing horde of zombies that are about to invade your home. You'll gradually expand your troop of potted plants as you progress to increasingly challenging levels and you'll need to adapt to the game as its situation changes, such as defending against the horde on your roof or at night. The coins you've earned from playing levels can then be spent at Crazy Dave's shop which he ran from the back of his van. There's even a mini-game of sorts where you can plant and harvest a variety of items, including coins, in your own garden.Proclaimed as being one of the modern classic tower defense games, Plants vs Zombies (PvZ) set a high bar for other similar TD games to follow and from what we can see, only a handful (Kingdom Rush, for example) managed to make it to a similar level of popularity as PvZ has enjoyed. PopCap Games has even followed up PvZ's huge success with exciting sequels (only on mobile though) and equally-entertaining spin-offs, like the PvZ: Garden Warefare game which diversified the entire franchise by delving into the competitive shooter genre.