A computer-implemented method may comprise providing a wager-based electronic gaming device (EGD), the EGD comprising at least one processor, memory, a display, an input interface and a money acceptor, the at least one processor being configured to execute computer-readable instructions stored in the memory for at least accepting money from a player via the money acceptor and establishing an account balance using the received money; displaying, on the display, a game environment configured to enable the player to participate, via the input interface, in a gaming session of a wager-based game and enabling, for the gaming session, game play and wagers. During game play, a loot box may be awarded at a time t1, and may be configured to award a monetary value to the player according to at least a generated random number and a selected pay table. Continued game play and wagers may be enabled after awarding the loot box. The loot box may then be evaluated at a time t2 later than the time t1 and the monetary value to be awarded to the player may be determined according to the generated random number, the selected pay table and according to events or game states that occurred between the first and the second time. The determined monetary value may then be awarded to the player.