I can recommend this game, but only as long as you get it on sale, or if you manage to pick it up off the Humble Bundle like I did weeks ago.
Tower of Guns is a simple game where you pick yourself a gun, pick yourself a perk, and then go into the titular Tower of Guns to destroy robots. If you wish, you can enable to "silly story" mode that gives you a randomized story each time you play the game, but that's just left to dialogue at the start of a level and sometimes at the end. Story is put on the backseat for the gameplay, so the gameplay must be good, right?
Well, I would say the gameplay is polished, but not good. If you played something like an arena shooter or touhou before, you'll do fine. Only a few enemies actually move, and the rest just stand still and shoot at you, which makes it easy to destroy them. The "challenge" comes from an overspawn of enemies, sometimes right on top of you when you enter a new room (literally, they appear right on top of you, this is not an exaggeration). Well, that's one of the games selling points. Jump around, roll around at the speed of sound, and shoot stuff. So the game is polished, you shouldn't have FPS issues, but the problem is. It's boring. The guns themselves don't really offer much of a difference in a "kick". They are feel the same when you fire them, there is no "weight" shown to the guns, no real recoil. The only difference between a gun is how fast it shoots, how big the bullet is, and how much damage it does. When you realize that, then its just plain smarter to pick up one of the "rocket" guns, pick the perk that makes you immune to self-damage, and jump-n-shoot.
Levels are short. Very short. Before you enter each new level, you're given a PAR time, which can go from two minutes to five minutes, and you don't need to kill all the enemies you see. You could jump-n-shoot from door to door until you get to the boss of the level, kill it, and move on. The levels also lack variation. If you've been to the "Warehouse" level at least three times, then you've seen everything the Warehouse will ever offer you. You'll be able to move through it like it was nothing, you'll be able to know where the power-ups are probably hiding, you can take a detour to the secret rooms, then head for the doors.
Perks seem to have minor differences that don't make much of a difference in the long-run. The starting perk lets you have three jumps, but you can aquire items that give you three jumps anyway. Some perks increase armor or speed, but again, you can just find items. Speaking of items, they are very ehh. You got stat items, and usable items. Stat items are just increases or decreases in things like HP, difficulty, armor, etc. As for the usable items, well, this will make me sound dumb, but I wasn't sure what some of them did. One item I used kept me from moving for a bit, and I decided to not use that anymore, another item regenerated my HP as long as I was standing in a green pool, and another gave me a pea-shooter (PEW PEW) that could be fired along with my normal gun. The usable items are also given dumb, "silly" names that just... why? Really, why? If I pick up a usable, I want to know, from the start, what it does, and only like three items gave me a clue of what they did.
But it can be a decent time waster if you only got an hour or two to play a game. Don't buy it at the full price, however. Wait for a sale or for it to go on a humble bundle again.