I just finished medium with 79 lives. Most of the lives I lost in the 1st half of the game!
I would slightly reduce the number of enemies in the 1st half, and then I would like to see some more waves. Bob is very powerful when fully upgraded, while not fully upgraded he is rather lame...
The new wall picture is a bit too bright if you ask me.

You're right carlitos75: it works good for the easy mode (except for the bosses). But I doubt it works in medium and hard modes.

Nice challenging game. The hard difficulty may be a bit too hard.

The upgrades are too eexpensive. Some towers are still too powerful. I would also reduce the gold in some levels. The destructor has too much power.

I'll work on the sounds and then soon release some games

Thank you all for the feedback !

@galgold: there's a new (really expensive) tower now. And more waves - can you still beat it on hard ? I can...

I just realized that I made a mistake in my version 0.3 description ! I added only 8 waves of course. Is it possible to change that ?

@river: the point is to build different types of towers even if the bullet tower is cheap !

Interesting idea ! Maybe a bit too hard (I survived with only 3 lives - how would I survive the next 9 waves ?)

I think the B-51 tower is too strong compared to the others (but still not strong enough;)