It's hard to review Knightmare Tower with a great deal of words (but that won't stop me from trying, I suppose).
The game is rather short (par for the course since it previously existed as a free Flash game and not much has been altered in its transition to PC) and once you've completed all it has to offer, you're not left with anything else beyond a sense of personal satisfaction.
The concept is a simple one - you take control of a knight and ascend a large monster-filled tower in order to rescue ten princesses in peril. No real story is fleshed out or explained at great length and quite frankly, it doesn't really need any. This is certainly a game that gets by on its charm alone and it does so with a humble air about it.
Controls, consisting of a basic three button input scheme, are responsive and allow the right amount of precision needed to succeed (or showcase multiple failures if you become overly anxious). The perfect setup for the type of game Knightmare Tower is, honestly.
The game's sense of progression comes in the form of a shop accessible at the end of each attempt to ascend the tower. Using available gold earned from previous tries, you're able to upgrade the knight in a number of areas. It's a welcomed touch that definitely helps with certain challenges, although it is entirely possible to finish the game's "story" mode without having fully upgraded each area.
Additional challenge comes in the form of quests issued as you attempt to reach the top of the tower. Some of these are relatively easy to accomplish with little effort (more so if you factor in the upgrade system) but are otherwise a welcomed distraction. Once you're done with the normal mode, you'll have access to the endless survival mode which also has its own set of quests to complete but also features an upgraded set of monsters to contend with. Like all endless modes, the fun factor available here is only limited to how long you can tolerate it before throwing in the towel.
The art style is a mix of quirky and cartoon-y, showcasing clean lines and and (mostly) vibrant colors in an attempt to remain visually pleasing to the eyes.
The music, written and performed by Belfast duo HyperDuck SoundWorks, is well suited to the game. It's a synthesized orchestral sound that never becomes overbearing and doesn't feel like an afterthought, which is a considerable plus given that the nature of the game warrants hearing the same piece of music looped repeatedly much of the time.
Overall, there's enough content present in Knightmare Tower to warrant a purchase (especially if you're the type who often buys games on a budget) despite its overall short length.
The asking price may seem too steep for some (especially those who know the game's origin as a Flash title) but if you're able to get past that potential bias toward it, there's always the possibility of picking it up at a discounted price.