The newest version 0.4.1.0b is available now!

• New Reward Options!
  
• There are new reward options for the "Heart" and "Coin" doors.
  
• The rewards of the "Heart" door were rebalanced.
  
• Alot of upgrades are much stronger now. There are alot of valueable options for your build.
  

• New Challenges!
  
• Some door rewards let you summon walking chest enemies.
  
• Slay them in the next level to get your reward.
  

Other Changes:

• Made some minor adjustments to the last performance update.
  
• Added a 30 seconds countdown to the sell button.
  

Some players requested a rebalancing of the "Heart" door rewards. The "+1 Life Each Round" reward was the only real option. The other options are much stronger now and there are some new options worth trying.
Selling towers now hast a 30 seconds countdown. I've read alot of feedback about the normal gamemode being too easy, because of the possibility to juggle enemies. It was the main reason I implemented the hardcore mode in the first place. Limiting the ability to sell towers is in my opinion the only solution, while keeping the realtime mazing mechanics of the game. I hope this cooldown improves the gameplay alot. Do you think it's too long or too short? Let me know in the steam forums!

-brimsel