777 Mega Deluxe (Crazy Tooth Studio) Slot Review

777 Mega Deluxe: Slot Overview 

When it comes to Crazy Tooth Studio, expectations should always lean toward the unconventional. This Microgaming partner has made a name for itself by releasing slots that are bold, eccentric, and rarely bound by tradition. 777 Mega Deluxe, released on January 21, 2021, continues that tradition—though in a more subdued, fruit-inspired format compared to some of their wilder creations. It is pitched as a “modern take on the classic slot machine aesthetic,” blending old-school fruit machine visuals with CTS’s signature experimental mechanics. 

Built on an unusually tall 4-reel, 7-row grid with 127 paylines, the game immediately sets itself apart from typical 3×3 or 5×3 fruity layouts. Backed by a 96.10% RTP, a relatively low 16.06% hit frequency, and high volatility, 777 Mega Deluxe aims to deliver fewer but more impactful wins. Its headline features, Respin Insanity and the 777 Mega Deluxe Bonus Spins, give the otherwise simple design a much-needed modern flair while boosting the game’s winning potential to an impressive 6,601x your bet. 

Despite its familiar symbols and classic theme, this is unmistakably a Crazy Tooth slot—quirky mechanics, atypical structure, and a gameplay flow that feels nothing like a traditional fruit machine.

Design and Graphics 

777 Mega Deluxe is a curious blend of sleek chrome styling and retro symbols. The oversized 4×7 grid dominates the screen, making the game look taller and more modern than any traditional fruit slot. Everything has a metallic sheen, giving it a polished, arcade-like vibe, though the overall visual impact remains somewhat understated.The symbols themselves are classic slot icons: 

Orange stars 

Horseshoes 

Moons 

Blue, green, and purple stars 

Clubs, hearts, diamonds, and spades 

Bars 

Lemons 

Cherries 

And of course, the iconic red 7 

They’re clean and crisp, but not particularly eye-catching. The design intentionally avoids flashy animations or deep thematic elements, leaning instead on simplicity. In a way, this minimalism does help the game feel timeless, though some players may find the absence of strong visual personality a drawback. 

Still, this reserved aesthetic fits within the “classic machine reimagined” concept. The chromed borders, glowing buttons, and subtle reel-shimmers give the game a futuristic touch without alienating fans of old-school slots.

Gameplay Mechanics 

At the heart of 777 Mega Deluxe is an unusual setup: 4 reels, 7 rows, and 127 paylines. This tall format gives the game more symbol positions than many standard fruit slots, but the base gameplay remains straightforward—wins form when matching symbols land across paylines. 

What sets the game apart is Crazy Tooth Studio’s trademark feature system. Instead of relying solely on raw symbol payouts, 777 Mega Deluxe uses mechanics that push for chain reactions and respins to amplify wins. 

Respin Insanity 

This is the game’s central base-game mechanic. Whenever a winning combination lands: 

All symbols involved in the win form a respin area. 

The highlighted positions respin automatically. 

If new matching symbols (excluding locked multipliers) land outside the respin area, they expand the zone. 

Respins continue as long as new symbols join the winning cluster. 

Once no new symbols land, the feature ends and the win is paid out. 

This mechanic adds excitement to even modest wins, as small clusters can suddenly expand dramatically. Since the hit frequency is low (just 16.06%), Respin Insanity helps prevent long dry spells from feeling entirely empty. It can also lead to surprisingly large outcomes when big symbol sets grow across the tall grid. 

Note: Multiplier wilds do not respin during this feature—they remain locked, preserving their position for the final payout.

Sound and Music 

The audio direction of 777 Mega Deluxe leans into the classic fruit machine theme with a polished modern twist. Electronic chimes, metallic clicks, and upbeat retro-casino jingles accompany reel spins and respins. There’s a celebratory flourish when wins expand during Respin Insanity, helping build excitement naturally as the respin area grows. 

Bonus spins introduce heightened audio cues, including more energetic effects and amplified win sounds. The music is far from experimental—instead, it helps situate the game squarely within the classic slot lineage while still feeling contemporary enough to avoid sounding dated. 

Overall, while the soundtrack isn’t remarkable, it suits the theme well and complements the chrome-polished aesthetic.

Bonus Features 

777 Mega Deluxe includes two primary features: Respin Insanity and 777 Mega Deluxe Bonus Spins.Respin Insanity (Base Game Feature) 

As described earlier, this feature triggers on every winning spin. It’s the workhorse mechanic of the game and appears frequently. Its expanding-cluster behavior helps prop up the game’s high volatility and low hit rate by giving wins meaningful potential. 

777 Mega Deluxe Bonus Spins 

This is the premium feature, triggered by landing scatter symbols on reels 1, 2, or 4. You receive: 

4 bonus spins, fixed 

Cannot be retriggered 

All triggering symbols transform into x2 or x5 multiplier wilds 

Any new multiplier wilds also remain locked for the entire feature 

Any winning spin during the bonus also retriggers Respin Insanity 

Here’s where the winning potential escalates. Locked multiplier wilds, especially x5 symbols, can create high-value combinations when combined with the expansion tendencies of Respin Insanity. Since the bonus only grants 4 spins, every spin feels high-stakes. If volatility cooperates, multiple multiplier wilds on screen can lead to explosive payouts.

Betting Options and Payouts 

777 Mega Deluxe offers bets ranging from €0.20 to €30, making it accessible to both casual and mid-stakes players. Its high volatility means the game is designed for risk-takers more than for smooth, gradual bankroll play. 

Stat Breakdown 

RTP: 96.10% 

Hit Frequency: 16.06% 

Max Win: 6,601x 

Paylines: 127 

Reels/Rows: 4×7 

Symbol Payouts 

Payouts are modest across the board: 

Lower-value symbols (stars, moons, suits) pay 0.05x–0.10x 

Bars, lemons, cherries pay 0.05x or 0.20x 

The lucky red 7 pays up to 0.25x 

On paper these are extremely low values—but the game compensates through: 

Locked multiplier wilds 

Respin expansions 

127 paylines 

High volatility bonus structure 

The design philosophy is clear: the base pays tiny amounts, while features produce nearly all meaningful wins.

Conclusion 

777 Mega Deluxe is an interesting hybrid—part classic fruit machine, part modern respin-based video slot. It may not be as strange or wild as some of Crazy Tooth Studio’s more experimental titles, but it still carries the studio’s unmistakable fingerprint. The tall grid, 127 paylines, and Respin Insanity mechanic differentiate it from traditional slots, while the chrome-coated aesthetic keeps it grounded in classic roots. 

The graphics are clean but not particularly inspiring, and symbol payouts are undeniably small. However, the gameplay shines once features get involved. Respin Insanity adds tension and unpredictability to nearly every win, while the Bonus Spins feature—complete with locked x2 and x5 multipliers—creates moments of genuine excitement. 

Players who enjoy classic slots with modern mechanics will find plenty to like here. High-volatility fans will appreciate the dramatic setup of the bonus game and the significant max-win potential of 6,601x. Casual players or those looking for richer visuals may find the experience a bit plain. 

In short: 777 Mega Deluxe is a solid, cleanly engineered, feature-driven fruit slot with a distinct Crazy Tooth twist. It’s worth a spin for players who enjoy respin mechanics, multipliers, and highly volatile classic-themed gameplay.