Base game vs bonus RTP: how much of a JILI slot’s return comes from free games

The short answer

Across the 30 JILI titles whose provider game sheet splits RTP into a base-game part and a bonus part, the bonus supplies between 9.60% and 47.72% of the total. The median is 24.87%, so on a typical sheet roughly a quarter of the theoretical return is paid through free games or the bonus round and about three quarters through ordinary base-game wins.

The spread is the finding. Bone Fortune pays 46.34% of its 97.11% through the bonus, almost half the return. Devil Fire pays only 9.34% that way, with 88.00% coming from ordinary spins. Two games with near-identical headline RTP can therefore behave very differently over a short session, because one of them keeps most of its return in reserve for a feature that may not arrive.

This is SlotVIP editorial analysis of 42 official game sheets captured on 24 September 2026. The sheets are the JILI titles that TaDa Gaming publishes under its own brand, and every figure below is read from them. No gameplay test, session log or player report is involved. For what RTP itself means, start with our slot RTP guide; this article assumes that background and looks only at how the return is divided.

What the game sheet actually lists

Each sheet prints a “Total RTP %”, then two further lines: “RTP Main Game” and “RTP Bonus”. The main-game figure is the part of the theoretical return that comes from wins on ordinary paid spins. The bonus figure is the part that comes from the feature, usually free games. Added together they give the game’s return per unit staked, before anything about luck in a particular session.

The quantity this article ranks is the bonus share: bonus RTP divided by (base RTP plus bonus RTP). It answers a question the headline percentage cannot: how much of the promised return depends on reaching the feature at all.

Every game, ranked by bonus share

The full ranking follows. Hit frequency is copied from the same sheet for context; our hit frequency guide explains how to turn it into an average gap between wins. The chart at the top of this page shows the same order.

How the shares are distributed

The mean bonus share is 25.63%, close to the 24.87% median, so the distribution is not pulled around by one extreme title. Still, it is wide: eleven of 30 games draw 30% or more of their return from the bonus, and eleven draw less than 20%. Base-game RTP alone ranges from 50.77% to 88.00% across the same games, while base plus bonus stays within 96.01% to 98.05%.

Put differently, the headline number barely moves while the way it is delivered changes by a factor of about five between the most and the least bonus-dependent sheet.

What bonus share does not predict

It is tempting to read a high bonus share as “volatile” and a low one as “steady”. The sheets do not support a simple rule of that kind.

Worked example: ₱1,000 of stakes

Suppose ₱1,000 is staked in total, for example 100 spins at ₱10. Multiplying that turnover by each line of the sheet shows where the expected return comes from. This is arithmetic on the published model, not a forecast of a session.

On Bone Fortune, base-game wins account for ₱507.70 of expected return and the bonus for ₱463.40. On Devil Fire the base game accounts for ₱880.00 and the bonus for ₱93.40. The totals are close; the route is not.

What this means for session variance and short budgets

The following is editorial analysis, not a figure from the sheets. The sheets list how much of the return the bonus supplies, but not how often the bonus triggers, so the probability of reaching it within a given number of spins cannot be calculated from them. What can be said is directional.

• In a session where the feature never triggers, the return you can expect from the spins you did play is roughly the base-game figure, not the total. On Bone Fortune that is about 50.77% of stakes; on Devil Fire about 88.00%.
• The larger the bonus share, the more of the promised return is concentrated in fewer, larger events. That widens the gap between sessions that reach the feature and sessions that do not, which is one ingredient of volatility.
• A short budget sees fewer spins and so fewer chances to reach the feature. With a bonus-heavy game, a small budget is more likely to end having experienced mostly the base game.
• None of this changes the long-run expectation. Every title here still returns less than 100% of stakes in theory, and no share value makes a game a better or worse way to recover a loss.

How this fits with our other RTP coverage

Our news piece on published RTP variants shows that one title can ship at several total RTP settings. The sheets here add a related detail. Nine sheets list more than one total, but each prints only one base and bonus split. On six of them the split adds up to one listed version: the lowest one on Book of Gold and Mayan Empire, a higher one on Chin Shi Huang, Medusa, Crazy 777 and Fortune Gems. On the other three it matches none of them exactly. Either way, the split describes one configuration and not necessarily the one an operator runs.

For more research pieces like this one, see the SlotVIP news desk. The five JILI titles in our review library use different sheets from these; their pages sit under JILI slots.

Method and limits

42 TaDa Gaming game sheets for JILI titles were captured on 24 September 2026. A build script re-reads each PDF, extracts the main-game and bonus lines, and stops the build if they differ from the parsed record or if a bonus figure appears on a sheet marked “Bonus mode: No”. Every number in this article is computed from that file at build time.

Limits: these are provider documents, not independently audited values. Sheets list values in euros for bet ranges, which we do not use. Trigger frequency for the bonus is not published on the sheets. An operator may run a different RTP version from the one the split describes. Gambling content on SlotVIP is for adults aged 21 and over in the Philippines; if play stops feeling like entertainment, use the support routes on our responsible gambling page.

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