TF2 Case Battles

How case battles work

A case battle is case opening as a head-to-head game. One player creates a battle, picks the cases and the number of seats, and other players join by paying the same case cost. Every seat opens the same cases at the same time, the site adds up what each player unboxed, and the highest total takes every item opened in the battle. Ties split the pot or go to a coin flip, depending on the site.

Crazy mode flips the rule: the lowest total wins. Some sites also run team battles, where two pairs open against each other and the winning pair splits the pot.

Odds, house edge and case choice

The house edge in a battle is the same as in the cases themselves. Each case’s expected return is below its price, and the battle only redistributes what the cases pay out. Your chance to win a given battle depends on the variance of the cases picked: a case with one huge item and a lot of cheap ones swings a battle more than a case with even values. In crazy mode the low-variance case becomes the safer pick.

A provably fair battle rolls each opening from a hashed server seed committed before the battle starts, so you can recompute every roll afterwards. Verify one battle on the fairness page before you join one that costs you items.

Checks before you join a lobby

Look at how many lobbies are open and how fast they fill; an empty lobby means you cannot play. Read the odds table for each case in the battle. Confirm the items you could win are in the withdrawal inventory, and set a loss limit, since battles move fast.

Which TF2 sites have case battles

TF2Easy and TF2 Royal both list case battles. Howl does not. See TF2 case opening for the solo version and the best TF2 gambling sites list for everything else.