A staple of GameShows. After completing round one, the host will usually announce that round two is exactly the same, only all the rewards and penalties are multiplied by two. Often, the associated tasks are more difficult than in the previous round, but not always.

If a BonusSpace has this effect, it's a MoneyMultiplier. Compare GoldenSnitch, for when the dollars are [[UpToEleven more than doubled]].
* ''Series/{{Jeopardy}}'': The ''Double Jeopardy'' round.
* ''Series/DoubleDare1986'' is more or less the TropeNamer.
* ''Series/NickArcade''
* ''Series/FamilyFeud'': Points are doubled and tripled in some rounds; the sequence changes depending on which version you're watching. Interestingly, the "points" were originally (before the [[RetiredGameShowElement Bullseye round]] came into play in 1992) dollars.
* ''Series/WheelOfFortune'': From 1995-96, there was a "Double Play" token up for grabs, which a contestant could hand in prior to any spin to double the value of that spin if it landed on a dollar amount. It did not double the value of the regular prizes on the Wheel, however, several viewers recall the token being used on the 1/3-width $10,000 prize, which was won and doubled to $20,000.
* On ''Series/StreetSmarts'', questions are worth $100, then $200, and finally $300.
* ''VideoGame/YouDontKnowJack''
* ''Series/TheNewlywedGame''
* ''Series/ImTelling'': Round 1 has questions for 25, 50 and 75 points. In Round 2, it's 50, 75 and 150. Close enough.
* ''Series/SaleOfTheCentury'': The original 1969 NBC version doubled the dollar value of the questions (from $5 to $10), changing at an undefined point in the show; the final round of questions toward the end of the show offered questions worth $20.
** Meanwhile, the Australian ''Temptation'' revival added a BonusSpace called "Turbo" to the Fame Game board- if a contestant picked it, the next three questions would be worth $10 instead of the normal $5- however, the same applied to the amount lost on an incorrect question, making it a possible risk.
* ''Series/SplitSecond'': Round 1 has questions for $5, $10 and $25; and $10, $25 and $50 in Round 2 (for the original 1972 version); and $10/$25/$50 for Round 1 and $25/$50/$100 for Round 2 in the 1986 revival.
* ''Series/RemoteControl''
* ''Series/{{Trashed}}''
* ''Series/CashCab'': The question value doubles after the first four, then again after the next four. Some games are randomly chosen to be "Double Rides."
* ''Series/WinBenSteinsMoney'' is an odd example. The first round values are either $50, $100 or $150 with a $50 bonus question/toss-up, depending on who got the question right. The second round features questions worth $200, $300, $400 or $500 (very rare), but no bonus/toss-up afterwards.
* ''Series/TheWeakestLink'': In the American version, the final round is played for double stakes. In the UK and other countries, the stakes are tripled.
* ''Series/PressYourLuck'' has the "Double Your $$ (+ One Spin)" space.
* ''Series/{{Tattletales}}'' invoked this when their format changed from $100 (or $50, based on one or two-word clues) per score to a share of $150 for every score in the first three questions. The final question was worth double, $300.
* In [[TabletopGame/{{Bridge}} Contract Bridge]], for a vulnerable partnership (defined as having won one hand towards rubber), the premiums for winning slams and doubled overtricks, and also the penalties for undertricks, are increased by 50% to 100%.