AirBoss is Platipus' aircraft-themed crash game. A round's multiplier rises as the craft ascends, and the player must cash out before it disappears into hyperspace. Up to two bets can be allocated to the current round, the next round or one of each; additional current-round bets are unavailable once that flight starts. Settlement uses the displayed multiplier when the cash-out occurs. These round-allocation choices are a specific AirBoss feature, rather than evidence that its stopping point can be predicted.
To compare related quick play formats, read the rules of Aviator and Aviatrix.
The library also explains how crash and instant-game rounds differ to help put these mechanics in context.
Source: published game information.