I didn't really care for the first Fieldrunners game, but the developers tweaked, streamlined and improved the game. I am really happy with the improvements. Its not just the same map with a different background. There is an actual campaign instead of just unlocking maps. The game does a really good job of instructing you and easing you into the game without forcing tutorial levels on you. The graphics and animations are also a lot better than the original game. The fun facts / tips make the game feel more alive. There are now items to use and you can pick your own towers that you'll be able to use.
Fieldrunners 2 is a very simple and shallow tower defense game with a cartoon look. The game consists of a campaign of several unique maps. You start with a certain amount of cash to buy your towers. You can place these towers anywhere, well almost anywhere. The enemies don't attack, they just run from their starting gate or gates all the way to your base. The game says your base, by base, I assume they mean your gate, because you don't see a base. These are basically open courtyards. If enough enemies get into your base, you'll lose the game. The limit is 20. I am very happy the game maps don't force you to do 100 waves, instead its 20, 30, 40 and so on waves. It makes the game feel much less of a chore when you can breeze through levels. There are other objectives too, like defeat X number of runners within Y time. The maps are really beautiful with a great art style. Far better and more diverse than the original game.
You're tasked with arranging these towers, making walls of towers, and making a winding path for enemies to follow. Basically make a maze of towers. Can you plug a gap and make an unsolvable puzzle? Nope. The enemies will plod through from left to right. If something blocks their way, they'll path around it, but not intelligently. They'll chose a path that can end up having more of your towers. Some maps have paths already predetermined. There is a wide variety of enemies, standard soldiers, a heavier soldier, they'll eventually get jeeps, motorcycles, tanks, helicopters and giant robots. What do they all do? Just walk. Again they don't attack you. The helicopters and planes will at least fly over your towers in a straight line headed for your gates. There are now troop transports that when they explode, the troops come out and keep running. Your job is to destroy them before they enter your gate.
Now that we've covered the enemies, let's talk about the towers, there are a few types of towers based on what mode you're on. Before each map / level, you'll fill 6 tower slots with towers you've unlocked by buying them with coins you earn for beating levels. This was a great change from the previous game that forced you to have 4 or 6 specific towers. Gun towers with short range, goo towers, that have a longer range, but will shoot goo to temporarily slow enemies down, there are oil towers that do the same thing, but to multiple enemies and the effect doesn't last that long. Next up there are long range missiles, which are great to have, there are bomb spitters that I feel are too similar to missiles. There are new laser towers that don't have an attack radius, but rather can attack up, down, left, right in a line. You can upgrade each and every tower by right clicking it and selecting to upgrade it for a price. Do you want to know which towers do the most damage? The stats are in the help menu item, but they should be hover items that just appear when you go to select which tower you'd like to place. There are new usable items as well, things like air strikes and mines. They're a nice feature in the game. The tower guns turn, but the electro towers don't turn and you'll pay extra for it. You can hit the space bar to pause the game to plop down towers, but there are only two speeds, normal and fast.
The previous game had you type in your name for the high score, this game just uses your Steam name. There are 3 difficulties for every map / level and I think it just adds waves onto the difficulty instead of making the enemies more difficult. The achievements are more time consuming than they are difficult. Its pretty easy to get them, but you'll invest 2 hours for the first one, which is a far cry from the first game where you could achieve the first few within a few minutes of the game. I wouldn't bring up achievements if the game didn't have 50+ and the previous game had 90+.
Overall, its a great upgrade from Fieldrunners 1. Its worth a try, and it might feel more like a mobile game than a PC game, but its still a fun little game.