Fan of the style, not really a fan of the execution. I think you could have pushed this a lot further - everything is very predictable as it is. Granted I only played through the first set of mutations, but from reading the shop descriptions and the trend the game was following, I lost interest.
Things I look for in these types of games (which this one lacks):
- Impact: I want to feel like my actions seriously affect the enemies and/or environment.
- Tradeoffs in upgrades: I want to choose to specialize or generalize, not be forced to generalize.
- Variety: I want drastically different enemies and weapons, upgrades, etc. that significantly change how the game is actually played (why don't my rockets explode?).
1 star for UI - looks really nice
1 star for having a smoothly functional game
1 star for execution