100 Blue Star

100 Blue Star Slot Review — AGT Software

AGT Software launched 100 Blue Star on 1 July 2022. The combination of a three-figure payline count and an actively growing jackpot pool is the structural signature of this title, shaping how value builds across a session rather than sitting only in the base paytable.

AGT Software, the developer behind 100 Blue Star, lists its slots as tested through independent labs including GLI (Gaming Laboratories International) and BMM Testlabs, and its catalogue of slots, arcade games, poker, keno and crash games circulates through casino markets in Eastern Europe, Latin America and Africa.

Core Gameplay Experience

Equipped with a four-row grid, 100 Blue Star provides greater vertical space than a standard three-row fruit machine, creating additional positions for a stacked symbol to land in a single stop.

The symbol set draws on classic fruit-machine imagery — watermelons, grapes, cherries, lemons and plums — alongside bells, sevens and the blue star that gives the title its name, set against a black background that keeps the higher-paying icons visible. This mix of fruit and classic bar-and-bell icons places 100 Blue Star among machines that combine several classic motifs rather than running a single theme.

Features and Mechanics

Wild symbols substitute for other paying symbols to complete winning combinations across the 100 active paylines, the baseline mechanic that the rest of the feature set builds on.

Expanding symbols, including expanding wilds, grow to cover their full reel position when they land, turning a single symbol into one that fills an entire reel and raising the chance that a payline clears through that position. Stacked symbols and stacked wilds work alongside this by placing several copies of the same icon on top of each other within a reel, so one stop can fill multiple rows of the four-row grid and feed more than one of the 100 paylines at once.

Scatter symbols pay according to how many land on the grid, regardless of where they stop relative to an active payline, adding a layer of reward that does not depend on lining up along one of the 100 lines.

A gamble feature, listed as a double gamble option, offers the choice to risk a completed win on a further double-or-nothing style decision instead of collecting it directly; using it is optional on each eligible win.

The jackpot feature is the title’s top prize and is described as a progressive jackpot rather than a fixed top award, meaning the pool reflects contributions from play rather than sitting at one static figure.

RTP, Volatility and Payout Model

100 Blue Star carries a theoretical return to player of 96.52%, calculated over a large number of spins, and AGT Software rates its volatility as medium-high, a profile that sits between frequent small wins and the deeper swings of higher-risk games.

Over 100 units wagered, the 96.52% figure implies an average return of 96.52 units in theory, with the remaining 3.48 units representing the built-in house edge; this is a long-run average and says nothing about the result of any single session. A medium-high volatility profile means winning spins tend to land less often than on a low-volatility machine, and the size of individual payouts varies more between hits, so a bankroll needs to absorb stretches without a return before a bigger line win or jackpot contribution shows up. Stakes on 100 Blue Star run from 0.1 to 50.0 per spin, a range wide enough to size bets to a modest bankroll or to push exposure higher, both played against the same 96.52% return model.

Similar Slots — Comparison

All six AGT Software titles in this set share the same paylines-plus-jackpot mechanic, which is why they sit together here; the RTP across the group ranges from 96.1% to 96.73%, and 100 Blue Star’s 96.52% falls inside that band. 40 Blue Star 6 Reels leads the group at 96.73%, a small theoretical edge of about $0.21 per $100 wagered over 100 Blue Star, while Blue Star, Blue Star 6, 5 Hot Hot Hot and Ice Ice Ice all return less — by $0.22, $0.36 and $0.42 per $100 respectively, each figure a theoretical long-run average rather than a session outcome. The gap that actually changes how a session feels is volatility, not RTP: Blue Star and Blue Star 6 run at medium volatility, while the rest of the group, including 100 Blue Star, sit at medium-high, so a player prioritising a steadier bankroll curve across this set has a concrete reason to look at the two medium-volatility titles instead.

How to Play 100 Blue Star Online

100 Blue Star is available in a demo mode that runs the same five-reel, 100-payline structure and the same feature set without placing real bets, a practical way to see how wilds, expanding symbols, stacked symbols and the gamble feature interact before any deposit is involved.

As of 4 November 2026, AGT Software’s games are carried by 5 casinos, including BirdSpin, SpinLine and 22bet; whether a specific title such as 100 Blue Star is in the library still depends on each casino’s own game selection. Readers comparing where to play can check the wider AGT Software slots and casinos listing or browse the slots category for other titles with a similar payline count.

Verdict on 100 Blue Star

100 Blue Star fits players who want a high number of paylines working on every spin and who accept a medium-high volatility profile, where wins land less often than on calmer machines but the paytable is backed by a progressive jackpot, stacked-symbol combinations and an optional gamble feature that can each add to a single result. A bankroll sized to absorb stretches without a return suits this profile better than a tight one, and the 0.1 to 50.0 stake range gives room to scale bet size to that bankroll. It is less suited to players who want frequent, small, predictable wins or a strictly low-volatility session, for whom the medium-volatility titles in the same series line up more closely with that preference.