Cyberkast is a multiplayer free-for-all and dueling game, aimed at groups of 2-6 players wishing to have some seriously chaotic fun. Genre-wise, it combines elements of arcanoid, billiard, pong and even a tint of tower defense or strategy, resulting in a mix of arcadey and logical goodness. Flavour-wise, it's about deep space duels of cybernetically enhanced transhumans whose control over time, matter and energy has started to resemble sorcery.
Gate-looking things are, well, Warpgates - you build them in pairs, and whenever a spell enters one side of the gate, it exits from the similarly coloured side of the linked gate.
Fiery balls are Prominences - they're fast, hardhitting and infinitely durable, but, unlike most other spells, they can exist on the battlefield for a very small amount of time. Also, as they get closer to their expiration date, they become more and more powerful.
Segmented circles are Assimilation Fields - whenever a moving spell goes through them, said spell loses a part of its power and field's owner gains a small amount of energy (for which spells are casted).