1. A game-operating computer-implemented method, comprising: concurrently receiving, via a computer network, by a at least one game-operating computer processor associated with a game provider, a plurality of Contra bets from a plurality of game players; wherein the plurality of Contra bets cover at least 100 events; wherein each event can have three or more possible outcomes; wherein each Contra bet comprises a combination of a first bet selecting a non-verified outcome of a particular event and a second bet selecting at least one possible verified outcome of the particular event; wherein the non-verified outcome is an outcome that the particular event will not occur in the future; wherein the at least one possible verified outcome is an outcome that may occur when the particular event occurs in the future; continuously updating, in real-time, by the at least one game-operating computer processor, an in-real-time dynamically-updated pool of already placed bets, comprising: a plurality of already placed Contra bets; dynamically and concurrently determining, by the at least one game-operating computer processor, odds for each Contra bet based, at least in part, on: (i)P, (ii) 1-P, wherein P is a probability of the at least one possible verified outcome of the particular event; wherein 1-P is a probability of the non-verified outcome of the particular event; (iii) at least one financial criterion associated with the game provider; and (iv) the in-real-time dynamically-updated pool of already placed bets; electronically and concurrently outputting, by the at least one game-operating computer processor, the odds for each Contra bet; electronically and concurrently receiving, by the at least one game-operating computer processor, indications of payments for the plurality of Contra bets, wherein an amount of each payment is based on the odds; electronically determining, by the at least one game-operating computer processor, each winning Contra bet, wherein a particular Contra bet is a winning Contra bet when one of the following occurs: 1) the particular event does not occur, or 2) the at least one possible verified outcome of the particular event occurs; electronically determining, by the at least one game-operating computer processor, a payout amount for each winning Contra bet; and electronically causing, by the at least one game-operating computer processor, to distribute the payout amount to a corresponding game player of the plurality of game players.