Mystery of the Lamp Treasure Oasis slot demo

How a round works

IGT is one of the oldest names in slot machines, and Mystery of the Lamp is one of its casino-floor series. Treasure Oasis brings it online on five reels with 50 fixed lines. You set your bet, spin, and lines pay from the left. The symbols are genies, camels, jewels and lamps, with a desert palace behind the reels.

What makes it play like a floor machine is the “cheats” tool and the shifting reel sets. Some spins switch the reels to a richer set with more high-paying symbols, and a collection bar fills as special symbols land. When it fills, the bonus is more likely.

Features

• Hold and win bonus: six or more bonus symbols lock and start three respins. Each new symbol locks and resets the respins. The round ends when the respins run out or the screen is full.
• Mystery symbols: some positions show a mystery symbol that turns into one random symbol across the reels, which can create several line wins at once.
• Reel set changes: at random, the game switches to a stronger reel strip for a spin.
• Symbol collection: special symbols add energy to a meter, which feeds the bonus.
• Multipliers and fixed jackpots: some bonus symbols multiply, and jackpots are fixed multiples of the stake.

RTP and volatility

The published RTP is 96.22%. IGT, like most suppliers, offers more than one RTP version, and the game’s help screen shows which one your casino runs.

The volatility rating isn’t published. Hold-and-win games with fixed jackpots usually sit in the medium-to-high range: frequent small line wins, with the bonus delivering most of the value.

Honest tips

• The collection meter is a design hook, not a promise. A full meter raises bonus chances for a spin, but the outcome is still random.
• Fixed jackpots scale with your bet. Doubling the stake doubles the jackpots and also doubles your losses on dry runs.
• Try floor machines and online with the same budget mind-set. Players who know the land-based version sometimes stake more online because spins are faster. Set a limit.
• Use bonus money carefully. Some casinos weight IGT games differently for wagering; read the terms.

Where to play it for real

IGT’s online games are carried by a smaller group of casinos than Pragmatic or Habanero titles. Search the lobby at our featured casino, 1Win (500% up to R75,000 over 4 deposits), or browse our best online casinos.

If you enjoy hold-and-win features, also try Chilli Heat (Pragmatic Play) or 64 Gold Coins Hold and Win (Booming Games), both covered on this site. Gambling should stay fun; if it isn’t, the NRGP helpline is 0800 006 008.