Hero Defense

Hero Defense is a tower defence game but you control movable units (and you will be moving them a lot) rather than stationary buildings. This is not necessarily a good or bad thing compared to a normal TD game, just different.
Gameplay is fun and can be frantic and fast paced depending on the map. You control 5 heroes (a mixture of ranged and melee) who fight off waves of monsters and bosses. Because your "towers" are mobile it's a lot more interactive during waves than your typical tower defence game, as you reposition your units to be in their most optimal locations or chasing down those few mobs that got away.
Each hero has their own talent tree, and you can upgrade their weapons and runes that boost their stats and powers. On each level the more monsters you kill the more you can "charge up" your hero, which basically means leveling up, boosting their power for that map.
Art style has a nice cartoony-gothic feel to it, but the animations are jerky and almost look like they're fixed at 20fps while the game is sat at 60+.
The default controls are rubbish because the developers seem to think I have three hands. Moving heroes is done with the mouse, the camera is moved with the arrow keys, and you switch between heroes with 1-5 and use consumables with QWER. Once I rebound the camera to WASD playing became much more enjoyable. But changing the camera keys isn't even possible from within the UI, I had to edit an .ini file to do it. Bizarre decision.
In single player you have a campaign mode with 14 levels. Each level has 4 different difficulties offering some replayability. Once you complete the game an endless mode unlocks, as well as 12 brand new levels. Multiplayer is dead, and I don't mean there's nobody playing it, I mean the severs are offline and have been for a long time. It has a co-op mode but I couldn't get it to do anything so I suspect that's broken too.
My main criticism is it's impossible to beat the game on the base difficulty setting without grinding earlier levels over and over to get coins and XP and upgrades for your heroes. This is not fun. Replaying levels on an increased difficulty for a challenge? ok cool, that's fun! but forcing you to do it for hours just to try and artificially lengthen the game really sucks.
It's not perfect, but the single player campaign is enjoyable and I think the positives outweigh the negatives.

Got this game off of Humble Bundle. Unlike other reviewers, I had no trouble getting it to work. I think the main difference between our PC setups is mine has a SSD instead of a HDD. Game played well and was a lot of fun.

Hero Defense has about 6 hours of Tower Defense game play to defeat the main final Boss in level 13. After that you still have 1 more level plus each level has 3 more difficulties to beat, and there are extension island that have a lot of level with a total 4 difficulty level.
Hero Defense are combining tower defense genre with hero as a tower that you could move around. You can upgrade your town to give your hero more advantage, leveling your heroes by using them on battle to unlock more skills, rune system that needs grinding for a true end game to make your heroes more powerful, and upgrading your heroes weapon. You have to micro manage your heroes for beating stage that is above your current "game suggested" hero-power-level.
Overall fun and refreshing game play with a lot of hours in it. Do not expect an epic story since it is not the main strength of this game. Besides who expect a well written story for a Tower Defense game?

A fun tower defense like game. You can control 5 heroes who essentially act as movable towers. The heroes have an skill tree and weapon upgrades but it is nothing very intricate. I have had fun playing it for what it is.