The Megasaur slot is a five-reel, 25-payline dinosaur game from RealTime Gaming, released in 2015, with a progressive Megasaur Jackpot tied to volcano symbols. Two Megasaur wilds and a pick feature worth 2, 5 or 10 free spins round it out. No usable RTP is published, and many welcome bonuses exclude progressive slots like this one.
Megasaur is one of RTG's older jackpot slots, dated to 2015 by VegasSlotsOnline. The listing shows the release as 11/10/2015, which could mean October 11 or November 10 depending on the date format, so we give the year only. RTG now distributes its catalog under its own name and as SpinLogic Gaming; our RTG software guide explains the change.
The game keeps a familiar shape: five reels, three rows and 25 paylines. Its character comes from two dinosaur wilds, volcano symbols that pay as scatters and trigger the jackpot, and a pick feature that hands out free spins.
If you want a quick definition rather than a full review, our short answer to what Megasaur is covers the essentials. This page goes further into the jackpot rules, costs and bonus restrictions.
Green Megasaur (reel 2), Red Megasaur (reel 4, doubles wins)
Not stated
Free spins
Megasaur Feature pick: 2, 5 or 10
Not stated
The 0% RTP figure on one listing can't be right for a slot and is best read as a missing value.
The Green and Red Megasaur wilds
Megasaur has two wild symbols, each fixed to one reel, according to VegasSlotsOnline:
Green Megasaur: a wild that appears on reel 2 and substitutes to complete wins.
Red Megasaur: a wild on reel 4 that doubles any win it helps form.
The doubling on the red wild is the only multiplier the sources describe, so treat any other multiplier claims with caution. The paytable shows which symbols each wild can stand in for.
Megasaur progressive jackpot and volcano scatters
Volcanoes do two jobs. As scatters, they pay up to 300 times the total bet, as reported. They're also tied to the progressive Megasaur Jackpot, which pays a share of the current pool depending on how many volcanoes land.
Megasaur Jackpot share by volcano count (as reported)
Volcanoes
Share of the progressive
Example if the jackpot shows $10,000
5
100%
$10,000
4
20%
$2,000
3
10%
$1,000
The $10,000 is only an example to show how the shares scale; the live amount is shown in the game and changes as players stake. Sources also differ on structure: VegasSlotsOnline describes one Megasaur Jackpot, while LCB lists three progressive levels. Whether a minimum bet is needed isn't stated, so read the jackpot rules before you play. The progressive jackpots guide explains how pools grow and reset.
A jackpot isn't more likely after a long time without a winner. Each spin is independent, and jackpot odds are long by design.
The Megasaur Feature: 2, 5 or 10 free spins
The bonus round is called the Megasaur Feature. It's a pick-style feature that awards 2, 5 or 10 free spins, per VegasSlotsOnline. The listing doesn't say what changes during the spins, such as extra wilds or multipliers, so check the game's help screen.
Ten free spins is a modest top award next to newer slots, which fits the medium volatility label: smaller features, with the progressive as the long-shot prize. These are in-game spins, not the casino free spins that come with wagering terms.
Megasaur RTP: why no figure is given here
Neither source gives a usable return to player. VegasSlotsOnline shows 0%, which is a placeholder, and LCB lists none. We won't estimate one. Progressive slots usually set aside part of each stake for the jackpot, so the base game returns less than the headline RTP would suggest, but without a figure the size of that effect is unknown.
What you can calculate is the cost per point of house edge: every $100 staked costs $1 on average for each percentage point of edge. Our guide on how slot RTP works explains the math, and what RTP means gives the short definition.
Megasaur real money play: a $50 budget at three stakes
Medium volatility tends to mean a smoother ride than high-volatility games, but the long-run cost still depends on total staked. Here's how a $50 budget stretches, with the expected loss shown per point of house edge because no RTP is published.
Megasaur $50 budget: spins and cost per edge point
Stake per spin
Spins if nothing returns
Expected loss per 1% edge on $50
On $250 staked (wins recycled)
$0.25
200
$0.50
$2.50
$1
50
$0.50
$2.50
$5
10
$0.50
$2.50
Every stake carries the same cost per dollar, but recycled wins multiply the total staked. A $50 budget that cycles to $250 staked costs five times as much on average as staking it once. Our bankroll management guide has practical stake-sizing rules.
Can you play Megasaur with a casino bonus?
Often not. Megasaur is a progressive slot, and progressive games are a common exclusion in welcome-bonus terms. Playing an excluded game while a bonus is active can void the bonus and its winnings.
Progressive-slot bonus rules for casinos linked here
Casino
Progressives allowed with the welcome bonus?
Source type
Planet 7
Not stated; LCB lists slots as eligible and excludes Banana Jones and Fish Catch
RTG has built several dinosaur games since Megasaur. They share the theme but not the specs, so check each review rather than assuming they play alike.
The original T-Rex is the only one with a published RTP. Our slot reviews hub lists every RTG game we cover.
Megasaur jackpots: US law and taxes
Seven states license real-money online casinos: New Jersey, Pennsylvania, Michigan, West Virginia, Delaware, Connecticut and Rhode Island. RTG progressives like Megasaur are mainly offered by offshore casinos that no state licenses. That means no state regulator to complain to, no state-backed protection of balances and terms the casino sets. Our offshore casino legality page explains federal and state law.
The Michigan Gaming Control Board named Planet 7 and Silver Oak in its April 9, 2025 cease-and-desist letters (opens in a new tab), calling the recipients illegal offshore operators. Royal Ace doesn't appear in any of the board's three releases naming offshore operators.
A jackpot is taxable federal income. From 2026, payers report slot wins of $2,000 or more on Form W-2G, and the income is reportable even if an offshore casino issues no form. Our big win taxes guide covers the reported 90% cap on the loss deduction from tax year 2026; check IRS guidance.
Where to play Megasaur with an offer via our links
These casinos are reported to run RTG games, but none confirms Megasaur in its lobby in the sources available, so check the lobby first. All three are offshore and not licensed by any US state; check your state's law before signing up. We earn a commission through these links, and the order is commercial. Because Megasaur is progressive, Silver Oak is listed last: its terms exclude progressives from bonus play.
Planet 7 Casino: $2,750 Welcome Bonus + 45 Free Spins, via our link (new players, 21+ or 18+ where allowed, terms apply). LCB reports a 200% match at 30x (bonus + deposit) on slots, a $1,000 max cashout and a $30 card minimum. No progressive rule is published; ask support before using bonus money on Megasaur.
Royal Ace Casino: $2,500 Welcome Bonus + 35 Free Spins, via our link (new players, 21+ or 18+ where allowed, terms apply). Third-party reviews conflict: 200% up to $4,000 at 30x on slots with a 10x-deposit max cashout (LCB), or 250% up to $2,500 plus 35 spins (casino.guru). Progressive eligibility isn't stated.
Silver Oak Casino: $2,500 Welcome Bonus + 50 Free Spins, via our link (new players, 21+ or 18+ where allowed, terms apply). Its terms exclude progressives, so Megasaur can't be used to clear a bonus there. The casino's own package is a 100% match on ten deposits with no free spins listed, at 30x (offer page) or 40x on slots (terms), from a $30 deposit.
The terms shown at sign-up apply. Bonuses are slot-focused, and table games are often excluded or weighted lower. For more jackpot titles and casinos, see the best progressive jackpot casinos. If gambling stops feeling like entertainment, the National Problem Gambling Helpline is 1-800-MY-RESET (1-800-697-3738), with text and chat through NCPG's help and treatment page (opens in a new tab).
Ad21+ (18+ where allowed). Ranked by us in a commercial order; we earn commission from these links. Advertiser disclosure
Megasaur is a progressive slot. Silver Oak's terms exclude progressives from bonus play, so it's listed last; Planet 7 and Royal Ace don't publish a progressive rule in the sources available. Offshore casinos, 21+ (18+ where allowed), terms apply.
Planet 7 Casino#5 on our listRealTime Gaming slots
Published terms (reported): Third-party reviews report a 200% match with code WELCOME200; the casino site could not be checked directly. Eligible games: Slots (reported).
Who runs it: License not shown; third parties report Costa Rica or none. Regulator notes: Named in a Michigan Gaming Control Board cease-and-desist release, April 9, 2025.
21+ (18+ where allowed). New players. Min deposit $30 (reported). Wagering 30x deposit + bonus (reported). Max cashout: $1,000 (reported). Withdrawal cap $2,500 / week (reported). Terms source: reported. Terms apply. Offer checked October 28, 2026.
Royal Ace Casino#6 on our listSlots and specialty games
Published terms (reported): Third-party reviews disagree on the package (200% up to $4,000, or 250% up to $2,500 + 35 spins); the casino site could not be checked directly. Eligible games: Slots and specialty games (reported).
Who runs it: License not shown; third parties report Costa Rica or none. Regulator notes: Third parties report it does not accept Ohio players.
21+ (18+ where allowed). New players. Min deposit $30 (reported). Wagering 30x deposit + bonus on slots (reported). Max cashout: 10x deposit (reported). Withdrawal cap $2,500 / week (reported). Terms source: reported. Terms apply. Offer checked October 28, 2026.
Silver Oak Casino#4 on our listBonus on 10 deposits
Published terms (casino terms): Silver Oak advertises a 100% match on each of its first ten deposits (up to $10,000 in total) with codes SILVEROAK1–10. Eligible games: Slots, keno, scratch cards (table games at 60x; many games excluded).
Who runs it: Primrose Media Limited, licensed in Anjouan (its terms). Regulator notes: Named in a Michigan Gaming Control Board cease-and-desist release, April 9, 2025.
21+ (18+ where allowed). New players. Min deposit $30. Wagering 30x on the offer page; 40x in the terms. Max cashout: None stated. Withdrawal cap From $2,500 / week. Terms source: casino terms. Terms apply. Offer checked October 28, 2026.
These casinos are offshore operators. They are not licensed or regulated by any US state, and state consumer protections do not apply. Check the law in your state before you play. Terms marked “reported” come from third-party reviews; the terms shown at sign-up apply.
21+ (18+ where allowed). Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: responsible gambling tools and free help. Gambling problem? Call or text 1-800-MY-RESET (1-800-697-3738).
Frequently asked questions
What is the RTP of the Megasaur slot?
Megasaur's RTP isn't published in a usable form. VegasSlotsOnline shows 0%, which is a placeholder rather than a real figure, and LCB gives no RTP. Without it, the house edge and the expected cost per spin are unknown, and we don't estimate. Each percentage point of house edge costs $1 per $100 staked, so keep stakes modest. Our RTP explainer explains the term.
How do you win the Megasaur Jackpot?
The progressive Megasaur Jackpot is tied to volcano symbols. As reported, five volcanoes pay 100% of the jackpot, four pay 20% and three pay 10%. Whether a minimum bet is required isn't stated in the sources, so check the jackpot rules in the game. One source describes a single jackpot and another lists three levels. Our page on what a progressive jackpot is explains how these prizes grow.
How many free spins does Megasaur give?
The Megasaur Feature awards 2, 5 or 10 free spins through a pick-style feature, according to VegasSlotsOnline. The listing doesn't describe any extra wilds or multipliers during the spins, so check the help screen for the full rules. In-game free spins are separate from casino bonus spins, which carry wagering requirements. See our explainer on how free spins work.
What do the Megasaur wilds do?
Megasaur has two wilds, according to VegasSlotsOnline. The Green Megasaur appears on reel 2 and substitutes for regular symbols. The Red Megasaur appears on reel 4 and doubles any win it helps complete. Those doubled wins are the only multiplier described in the sources. Check the paytable for which symbols the wilds can and can't replace. Our multiplier glossary entry explains how multipliers work.
Is Megasaur the same as T-Rex or T-Rex II?
No, they're separate RTG dinosaur slots. Megasaur dates from 2015 and has the volcano-based Megasaur Jackpot. T-Rex is a 2009 game with a 97.5% listed RTP, and T-Rex II is a 2019 release with its own progressive. Specs and jackpot pools don't carry over between them, so check you've opened the right title. Read our T-Rex II review for that game's details.
Can I use a welcome bonus on Megasaur?
At many casinos, no, because Megasaur is a progressive slot. Silver Oak's and SlotoCash's terms exclude progressive slots from bonus play, and playing them can void bonus winnings. Planet 7 and Royal Ace don't publish a progressive rule in the sources available, so ask support or check the terms first. Our guide to how to read casino terms shows where to find the eligible-games list.
What is the max win on Megasaur?
No fixed maximum win multiple is published for Megasaur. LCB lists the top fixed award as $400, or 2,000 coins, for the non-progressive part of the game, while the progressive jackpot can pay more and changes in value. Five volcanoes are reported to pay 100% of the progressive. Check the jackpot panel for its live amount. Our jackpot odds guide explains why such wins are rare.
Are Megasaur jackpot wins taxable?
Yes, jackpot wins are taxable federal income. From 2026, payers report slot wins of $2,000 or more on Form W-2G, and you must report the income even if an offshore casino doesn't issue a form. The loss deduction is reported to be capped at 90% of losses from tax year 2026, so check IRS guidance. Our gambling taxes explainer has more detail.
Can I play Megasaur in Montana?
Not legally online, because Montana permits no form of internet gambling other than nonprofit raffles, according to the Department of Justice's Gambling Control Division. The division also says credit cards may not be used to gamble. A 2025 law, SB 555, is reported to ban sweepstakes casinos that mimic online casinos from October 1, 2025, with felony penalties. Sports betting runs through the Montana Lottery at licensed locations. Players in Billings and across the state should read our Montana online casinos page first.
Does the Megasaur slot work in a mobile browser?
Usually yes, since the casinos linked here run RTG games in a mobile browser. Silver Oak's mobile casino page lists browser play on iPhone, Android and tablets, and third-party reviews describe instant play with no app at Planet 7 and instant play, mobile and download options at Royal Ace. The jackpot panel can be harder to read on a small screen, so open the help screen and check the live jackpot and any minimum bet rule before spinning. Our iPhone playing guide covers the setup.
How would a Megasaur jackpot be paid out?
In weekly installments at most offshore casinos, because withdrawal limits apply to jackpots too. Silver Oak's terms set a weekly limit from $2,500, raised by VIP level, and third-party reviews report $2,500 a week at both Planet 7 and Royal Ace, with Royal Ace also reported at $5,000 a month. On a $10,000 jackpot, that means at least four weekly payments. Verification must be finished before the first one. Ask support in writing how a large win will be paid. Our weekly withdrawal limits guide explains the arithmetic.
What is the minimum deposit to play Megasaur?
It's $30 by card at all three casinos linked here, with a $5 crypto option at two of them. Silver Oak's banking page lists $30 for cards, Bitcoin, Litecoin and Ethereum. Third-party listings report $30 by card and $5 by Bitcoin Lightning at both Planet 7 and Royal Ace. Whether Megasaur needs a minimum bet to qualify for the full jackpot isn't stated in the sources, so check the jackpot rules before choosing your stake. See what the minimum deposit is for more on how casinos set them.
Is Megasaur legit?
Megasaur is a real RealTime Gaming progressive slot dating from 2015, and third-party sources report RTG games are tested by Technical Systems Testing. The more important checks are on the casino side. Michigan's regulator named Planet 7 and Silver Oak as illegal offshore operators on April 9, 2025, and no US state licenses any of the casinos linked here. Jackpot pools, payment schedules and RTP settings follow each casino's terms. Read are RTG games fair and the Planet 7 legitimacy check.
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