Nice game with a steep difficulty curve. The first few levels are a breeze, but level 10+ become very challenging. Haven't been able to beat the last boss, because there's so much going on on the screen and the final special seems to be pretty useless (even though Iron Man appearing on the screen IS funny), especially since it blocks my view of the screen, so I cannot avoid the bullets anymore. :(
Just like CollectiveSin I encountered the "coin bug" where the coin counter wouldn't stop rising. Didn't affect my game too much, though, as I only had two upgrades left to buy.
Thoughts on how to improve this game:
- Change the specials, so they clear the screen from all enemies (except bosses). I found that the last special was pretty much useless, it didn't even kill the tanks on level 14 (and they are tough to get rid of otherwise!). Maybe even have the special remove all the coins from the screen, so the player has to decide if the tradoff "no coins - no enemies" is worth it or not.
- Introduce some graphic options. Would be nice to be able to turn off the "snow" effects, as they cause the game to lag a bit and there's already so much going on on the screen, it really is distracting the player
- Different music? I know there's the option to turn it off, but I think different kinds of music would be a nice little extra.
Overall, it's a good game. The medals are a good mix of easy to get and hard to get, which always offers a nice challenge.
The gameplay is simple enough, the controls are very responsive, the upgrade system is a nice little bonus.
Overall, I rate this 3,5 out of 5.