Versus is a 1v1 battlefield where you will face-off against another player with a similar number of COGs. If a player within your COG range cannot be found after an extended period of time, then you will be matched with an NPC. Continue up the ranks to Bronze or higher to compete in Seasons and win even greater rewards.
Wins will earn you Gear Packs and completed battles will adjust your COGs which will determine your Arena. As you make your way through Arenas, you will unlock additional Pins that can be delivered in Gear Packs.
A Season is a timed event in Versus where you will try to increase your COGs and your League. Rewards will be based on the League you finish in at the end of the Season and will be sent to your in-game Inbox. League standings are reset at the beginning of each Season, so you'll have to earn your way back up to the top.