How Scratch Lottery Tickets Work: Odds, Prize Tiers and Payout Rates

The game behind the question

On 5 October 2026, French lottery operator FDJ launched a new €3 scratch ticket called Illiko Chambre Forte, described on FDJ's own site as the first new Illiko release of autumn 2026. Players scratch panels shaped like gemstones to reveal six winning numbers, then scratch a pyramid of gold bars split into tiers marked with multipliers x1, x2, x5 and x10; any match between a player's numbers and the winning numbers pays out the base prize multiplied by the tier it falls on, according to FDJ.

News site presseagence.fr, which covered the launch the same week, reported the same price and launch date and said FDJ advertises an overall chance of winning some prize of about one in four. The top prize is €50,000, and FDJ states the ticket has seven prize tiers running from €3 up to that jackpot.

How the odds are actually built in

Every scratch game is printed from a fixed design: the operator decides in advance exactly how many winning tickets of each value will exist inside the total print run, then mixes them randomly before distribution. For Illiko Chambre Forte, FDJ publishes a separate probability for each prize tier rather than just one headline number.

Added together, the probabilities of these seven tiers come to roughly one in four, matching the overall odds that presseagence.fr and other French coverage attributed to FDJ for this game. That illustrates a general rule for scratch tickets: the single "overall odds" figure printed on a card is simply the sum of the separate odds for every prize level, including the smallest prizes that only return the ticket price itself.

What the payout rate actually means

FDJ states that Illiko Chambre Forte has a player return rate of 66%, meaning that across a very large number of tickets, the average amount paid back in prizes equals 66% of what was spent on tickets. French consumer-test site tirage-gagnant.com illustrated this with a real purchase: its editorial team bought 10 tickets for €30 on the game's release day and won €3 in total, against a theoretical average of €19.80 for 10 tickets — the figure obtained by applying the 66% rate to a €30 spend. Only one of their ten tickets won anything, compared with the roughly 2.5 winning tickets that one-in-four overall odds would predict on average.

Tirage-gagnant.com's review placed Chambre Forte last among current €3 scratch games in terms of payout rate, and noted that its pyramid-of-multipliers mechanic repeats the one used on an earlier FDJ ticket called Crescendo rather than introducing something new.

The same review noted that Chambre Forte's €50,000 jackpot matches another current FDJ game called Vegas, but is lower than the €100,000 top prize offered by FDJ's Cash Pocket ticket, without giving a payout-rate figure for either comparison game.

How to check the real value of any scratch ticket

1. Read the price and the jackpot printed on the front of the card — a big headline prize does not by itself say anything about the odds.
2. Find the "overall odds of winning" statement that lottery operators are required to display on the ticket or in official game rules.
3. Look up the full prize-tier table the operator publishes (as FDJ does on fdj.fr for each Illiko game), which lists how many winning tickets exist at each prize level.
4. Multiply each prize amount by its own probability and add the results together: this reconstructs the official payout rate, as the Chambre Forte figures show.
5. Compare that payout rate across different tickets from the same operator before spending, since price and jackpot size do not tell you the return rate on their own.

Why the games are profitable for operators

According to Wikipedia's entry on scratchcards, the format relies on hidden information — usually numbers or symbols — printed under an opaque coating, most often a water-based latex developed in the late 1980s that is designed to scratch off easily while resisting accidental damage before purchase. The article states that winning odds on scratch cards typically run from under one in five to about one in 2.5, and that low odds combined with high sales volume let the operator stay profitable even when it pays out occasional large prizes.

To stop tickets being tampered with or read before sale, the Wikipedia article says cards use security measures such as barcodes covered with opaque latex ink, and that some jurisdictions use alternative covering methods including scratch labels, hot-stamp foil or "sandwich" labels instead of standard latex. These mechanisms do not change the odds themselves; they exist to keep the pre-set, randomly distributed prize structure secret until a ticket is bought and scratched.