I would describe Bound by Flame as an arcade style action-RPG.
At first glance the game might seem similar to Witcher but this is deceiving, Bound by Flame and Witcher are completely different games that try to do different things in different ways.
Bound by Flame reduced some RPG elements to a bare minimum in order to create a very fluid action-oriented combat.
The combat in this game is more similar to an arcade-RPG than to the usual RPGs we are used to.
Personally i enjoyed the combat a lot. Just like Mars War Logs, the combat seems difficult and unfair at first but it quickly becomes addictive once you get into it.....IF you get into it before getting frustrated because you tried to play it like it was Witcher or Amalur.
The combat reminds me a little bit of some of my fave arcade games like Knights of the Round, D&D Towers of Doom/Shadows over Mystaria.
The skill tree looks very similar to other games but again this is deceiving. You have a warrior branch (2 handed swords, axes and hammers), a so-called ranger branch that specialises in daggers (no bows), and a magic branch that unlike usual games, is not self-sufficient, its intended more like a buffer than a caster.
There is also a feat tree (every level you get two skillpoints and one feat point) where you can further improve your character in different ways.
The so-called crafting is very basic but very practical, can be done everywhere (even in fights) as long as you have the needed materials that you can gather or loot from containers or defeated enemies. The amount and type of upgrades that you can insert on equipment depends on the "level" of the equipment, early armors and weps have very little options while later ones offer a great variety of interesting options.
There are two secondary weapons that can prove very useful, the crossbow (very limited ammo used mostly for interrupting or poisoning) and the traps. These two weapons could become the only way out of difficult boss fights if you screwed up your character build (like investing points in both the ranger and the warrior branch which is a big mistake).
The graphics are very good but there is too little variation.
The story is good but its unpolished, many inconsistencies and loose ends.
The decision-making that is supposed to change the story is very underwhelming as is the so-called seduction thing. This aspect was so much better in Mars War Logs.
Also its a bit annoying how dialogue options are still there after they are no longer valid, not a big thing but still.
All in all this is a very entertaining game if you are after an action-RPG with very fluid arcade-style action and a fairly good story.