Jurassic Park is the most elaborate of the licensed titles in this catalogue, and the one whose absence is most conspicuous. Its distinguishing feature was not the property but the structure it was hung on: five separate free-spin modes, selectable by the player, each running under different rules.
Games with several bonus rounds normally handle the selection for the player. The rounds unlock in a fixed sequence, as in Thunderstruck II , or one is assigned at random on entry. Letting the player pick is rare, and it changes the character of the bonus entirely.
The five modes trade spin count against enrichment. One offers a generous number of spins under essentially base-game rules; another offers noticeably fewer with a mechanic layered on top. Because the modes are balanced against each other, no selection is mathematically superior, and the choice is therefore about preferred variance rather than about expected value.
That is worth stating clearly, because a selectable bonus invites the belief that skill is involved. It is not. What the choice provides is control over the shape of the outcome, not over its size.
Wins are counted by adjacent-reel matches from the left rather than along drawn lines, producing 243 combinations on a five-by-three grid. Base play is consequently busy and flat, with frequent small returns, and the stake covers the entire grid with no line decision to make.
The layout matters more than usual here because several of the bonus modes act on whole reels. A mechanic that fills or transforms a column contributes to every combination crossing that column, which on an adjacent-ways grid is all of them. The same mechanic on a fifteen-line game would touch only the lines that happen to pass through.
The licence ended and the game left almost every catalogue. That is a contractual outcome, not a commercial one: branded titles disappear when the agreement behind them lapses however well they performed, which is why the best-remembered games of this period are frequently the least available.
Documenting a retired title is not sentimentality. Demand for a well-known property outlasts its availability by years, because the film is far more famous than the slot, and a reader searching by name is better served by an accurate account of what the game was and that it has gone than by a page implying otherwise. The same applies to Terminator 2 , retired for the same reason in the same period.
Return-to-player figures, the maximum win and the exact spin counts for each of the five modes are omitted. The figures varied between operators, the title is no longer in general distribution, and there is no current deployment against which to verify any of them. For a retired game the temptation to reproduce numbers from an old marketing sheet is strong and the numbers are unverifiable.
What can be described is the structure, and the structure is unusual enough to be worth the record: an adjacent-ways grid, five player-selected bonus modes trading spins against enrichment, and a licence that outlived neither. The remainder of the catalogue, including the titles still listed, is indexed in the review directory .
243 ways underneath, and a decision on top that almost no other slot hands to the player. On a card:
Chosen freely on entry â a decision rather than an outcome, though no choice is mathematically superior. The modes trade spin count against enrichment.
The bonus modes act on whole reels, and on an adjacent-ways grid a whole-reel effect touches every combination.
Wins count as 243 ways: the same symbol anywhere on each adjacent reel from reel 1. Which row it lands on never matters.
No score is given. Nothing on this page was play-tested, and a number would imply testing that did not happen.
Gambling content, for entertainment only. Outcomes are determined at random and no strategy alters them. Play within limits that can be afforded, and consult the support services available in your jurisdiction if play stops being enjoyable.
Yes, and that is unusual. Most games with multiple rounds either unlock them in sequence or assign one at random. Here the player selects from the available modes on entry, which turns the bonus into a decision rather than an outcome, even though no choice is mathematically superior.
Mechanically. Each carries a different combination of spin count and special behaviour, so one offers many spins under plain rules while another offers few under enriched ones. The trade between quantity and enrichment is the substance of the choice.
The licence behind it ended. Branded titles leave catalogues when the agreement lapses, independently of how well they performed, which is why several of the best-known games from this period are documented rather than playable.
A separate title based on the later films in the series was released by the same distributor, with a different grid and feature set. It is a distinct game rather than a revision, and it shares the property rather than the design.
It makes it slower to learn and more varied once learned. Five modes means five separate rhythms to discover, which rewards a long acquaintance and offers very little to somebody playing twenty spins. Whether that is better depends entirely on how the game is being approached.
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Published 10 August 2026