Must drop jackpot slots

What are must drop jackpot slots?

A must drop jackpot is a growing prize pot with a built-in deadline. Like a standard progressive jackpot, it is fed by a small share of every stake placed on the connected games. Unlike a standard progressive, it cannot run on indefinitely: it has to be paid before a stated time, such as a set time each day or the end of every hour, or before the pot reaches a stated amount, such as “must drop before £500”.

It sits alongside progressive and fixed jackpot slots in our jackpot slot machines section, and you can see every format we cover in the slot types hub. In casino lobbies the same idea is sold under names such as “daily drop”, “must hit by” and “hourly jackpot”.

How a must drop jackpot works, step by step

Operators and studios describe their own rules in the jackpot’s terms, which UK-licensed games must make available before you play. Most must drop designs follow this pattern:

1. The pot resets to a starting value, the jackpot seed, straight after the previous win.
2. At that moment the system picks a hidden drop point at random: an amount between the seed and the cap, or a time inside the drop window.
3. Every qualifying spin on the connected games adds its jackpot contribution to the pot, and the live value is shown on the game tile or screen.
4. The spin that takes the pot past the hidden amount, or the spin in play when the hidden time arrives, wins the jackpot.
5. The winner is paid, the pot resets and a new hidden drop point is chosen.

The randomness sits in where the drop point lands, not in a dice roll on every spin. That is the key difference from a standard progressive, where each spin has its own small chance and the jackpot can, in principle, keep growing for months.

Hourly, daily and cap-based must drop jackpots

Some networks pair time-based tiers with a larger tier that has no deadline at all, so check which tier you are looking at before assuming it must drop. The jackpot’s information page lists the rules for each one.

The maths: what are the odds on a must drop jackpot?

Because the drop point is spread across the pot’s range, your chance of being the winner is roughly the share of that range your own contributions cover. The numbers below are a simplified, hypothetical example, not the settings of any real network; real contribution rates and caps vary and are rarely published in full.

Time-based jackpots work the same way, but the range is time rather than money: your chance is roughly the share of qualifying stakes you place during the window when the drop happens. On a busy network you are one of a large number of players feeding the same pot, so your share is small.

What about playing when the pot is near its cap?

In theory, once a value-cap pot has climbed without dropping, the hidden point must lie in the narrower range that is left, so each contribution covers a bigger share of what remains. In practice you cannot see the drop point, the contribution rate and tier rules are not fully published, the meter is shared with everyone on the network and may already have dropped by the time you spin, and the base game still costs money on every spin. It is not a way to make slots pay, and planning sessions around a meter is a quick route to playing longer and spending more than you intended. Our page on the gambler’s fallacy on slots explains why “due” thinking misleads.

Red Tiger’s Daily Drop: the best-known must drop network

Red Tiger, founded in 2014, is the studio most associated with daily drop jackpots. Its Jackpots Network was introduced in April 2019, and in late September 2019 the studio added must drop jackpots every hour alongside the existing daily jackpots, according to trade reports at the time. Red Tiger said the product was available across all of its titles. NetEnt bought Red Tiger in September 2019, and both have been part of Evolution since December 2020.

Whether the drop jackpot meters appear on Mystery Reels, Dynamite Riches or any other title depends on what the casino runs, so look for the meters on the game tile or in the rules. Where a jackpot is attached, check whether the listed RTP includes the jackpot share; the how jackpots are funded page explains why that matters.

Must drop vs progressive vs fixed jackpot slots

Our fixed vs progressive jackpots comparison goes further on the two older formats, and the answer to what a slot jackpot network is explains how pots are shared across casinos.

UK rules that apply to must drop jackpot slots

There is no separate UK rule for must drop jackpots. They follow the same online technical standards as every other slot: the game’s rules and the RTP or likelihood of winning must be available before you play, under the Gambling Commission’s RTS 3 standard (opens in a new tab), and rules, payouts and probabilities can’t change while a game is available. Our RTP information rules page summarises those duties.

• Stakes are capped at £5 a spin for players aged 25 and over, and £2 for 18–24s (since 9 April and 21 May 2025).
• Each spin must take at least 2.5 seconds, with no autoplay, turbo or slam-stop (since 31 October 2021).
• Online jackpots have no statutory prize cap; land-based Category B1 casino machines are limited to a £20,000 linked progressive on a premises basis.
• Winnings are not taxed for UK players.

Those limits apply whatever the meter shows. See online slot stake limits for how the caps are enforced.

Where must drop jackpots came from

Linked jackpots began on casino floors: Wikipedia’s account dates progressive jackpots in large casinos to 1986, with IGT’s Megabucks described either as the first progressive or, more carefully, as the first wide-area progressive. The “must hit by” idea adds a ceiling or deadline to that same linked-pot model. Online, the format spread through studio-run networks such as Red Tiger’s in 2019. The progressive jackpot history page covers the full timeline, and the Wikipedia article on progressive jackpots (opens in a new tab) is the source for the early dates.

Pros, cons and who must drop jackpot slots suit

Must drop jackpots suit adults who like an extra prize layer without the very long odds of a headline network progressive. They are a poor fit for anyone tempted to chase a meter. Set a time limit before you start; reality checks and session limits both help.

Must drop jackpot myths and facts

• “The jackpot always drops at the last minute.” The hidden time or amount is usually set at random across the whole range, so an early drop is as likely as a late one.
• “Big stakes trigger it.” The winning spin is whichever crosses the hidden point; your stake only affects how much of the range your contribution covers.
• “There’s a best time to play.” Busy periods simply mean more players share the same pot; see the best time to play slot machines.
• “Must drop means everyone wins eventually.” Only one spin wins each drop; everyone else has paid their contribution and the base game’s cost.

Where to find must drop jackpot slots online

Daily drop and hourly jackpots are switched on by individual casinos, so the only reliable check is the game tile or jackpot section of the lobby; availability changes. Welcome free spins are normally restricted to selected games that may not carry a drop jackpot. Every offer below is for new customers aged 18+, and terms apply.

Coral’s offer (1 October 2026 to 1 February 2027) gives 100 free spins at 10p on selected games after you deposit and bet £10+ on slots; accept them within 48 hours and use them within 7 days, with no wagering on winnings, and note that some payment methods, including PayPal, Skrill and prepaid cards, are excluded. Ladbrokes gives 50 free spins a day for 10 days, up to 500, after £10 of slot play, at 10p each on selected games, claimed by 23:59 daily and valid 7 days, with no wagering; Coral and Ladbrokes are both run by LC International Limited. PlayOJO gives 80 no-wagering spins at 10p on Big Bass Bonanza after a first deposit of at least £10, for new UK customers outside Northern Ireland. For jackpot-specific bonus terms, see our jackpot slot bonus page.

If you notice you are planning play around jackpot timers, take a break. GAMSTOP (opens in a new tab) lets you self-exclude from all UK-licensed gambling websites, and the NHS gambling support page (opens in a new tab) lists free treatment options.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.