Here's a guide. Please keep it alive. 1. You get cards as your hero levels up, 10 per hero, but some heroes get the same cards. 2. Grullborg Grimtooth, the Green Orc hero, has the highest max mana at 3500. Each hero is different. 3. You unlock Cave of Trials after beating the game once, and starting a New Game Plus. 4. In COT5, there is an invisible goblin that does 999999 damage. You aren't supposed to kill him, you keep him back with Mermaid water shots while the rest of your troops kill the castle. Hope people bother to read this. 5. It's probably a good idea to complete the conquest as all the characters before attempting to beat the COTs
After you've upgraded graphic to highest you should be able to choose music in the money collector because I just love the music int the beginning. Otherwise it's the best gme I've played
 "Pwong 2"){kind=icon}
 "Vector Runner"){kind=icon}
 "Super Energy Apocalypse : RECYCLED!"){kind=icon}
 "Crunchball 3000"){kind=icon}
 "Epic War 3"){kind=icon}
 "UPGRADE COMPLETE!"){kind=icon}