User blog comment:DaCardGameBoss/Please! Help!/@comment-11454852-20140630211054

Same suggestion as with CFV, try different builds and see which you like the most. Each world has 2 main attributes, while some of them have several archetypes giving your more build choices, but in general they mostly stick with the World's main focus. I can also offer a quick description of each world:

Dragon: Balance between offense and defense with some focus on monster destruction. Oversupported so tons of build options.

Danger: High power aggresion, monsters have higher than average stats and like to keep the center open. They also focus on using items and recently, increasing crits.

Magic: Control the flow of the game with many spells, monsters are weaker in terms of stats but they have strong skills and are good at rushing.

Katana: Predict and counter the opponent's moves with many mind game skills, they like setting cards face down in their soul to use them as counters (similar to Trap cards in YGO).

Ancient: Control a powerful Size 3 monster and wreck havoc with it while the other 49 cards support it and keep it alive. High risk - high reward playstyle with Lifelink.

Dungeon: Mini game and random skills to give the game a fun luck theme. The adventurers focus on Link attacking and the dungeon enemies are stronger alone.