https://www.youtube.com/watch"v=zfDWSShRv6E

Fusion system lets you fuse pretty much any character
Different enemies appear in Fusion World
The characters attack in the order of a "Timeline"
Characters closest to the right being the next in line to attack
3 main commands
Basic attacks are split between Fight and Energy Ball options
Fight is a close-ranged melee attack with high power while Energy Ball uses Ki and will allow you to pull off multiple attacks depending on its type
Special Attack: most powerful one for dealing damage
Other options such as "Charge Ki" and "Check Power"
Character triangle with each character fitting under a category of Power, Technique, and Speed
Power beats Technique
Technique bests Speed Speed takes out Power.
"Ring Out": used to blow enemies away and send them further to the left in the Timeline order
If used properly, you can keep certain enemies from attacking by keeping them pushed back
This will also come in handy when you want to pull off Support Attacks
Activate Support Attacks with multiple characters just by having their turn orders next to each other in the Timeline
Deal more damage with more characters for Support Attacks
Different Support Attack categories
Fight-type: deals more damage than the basic version and blows enemies away
Energy Ball-type: aren't as strong as the Fight-type counterparts, but they can hit multiple enemies at once
Support-type: various effects such as healing abilities...