Welcome to our deep dive on 777 Super Big BuildUp Deluxe — the demo, the maths, and whether it earns a spot in your rotation. Crazy Tooth Studio are the software studio behind it, tuning the slot game for a medium high volatility profile, with 95.59% RTP. Dating back to 2022, it remains a regular pick. The maximum win sits at 5,000x, so there's serious upside on the table. Visually it's built around a fruit and sevens theme, with the action running on a 5-reel grid running 20 paylines. Here's how it stacks up.
Written by Alex Crawford · Last updated: February 2026
At its core, 777 Super Big BuildUp Deluxe is a game produced by Crazy Tooth Studio, themed around fruit and sevens and powered by 5 reels and 20 paylines. The result is a medium high volatility profile paired with a published RTP of 95.59%.
Where 777 Super Big BuildUp Deluxe earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. All told, it's a solid entry in the Crazy Tooth Studio catalogue.
At 95.59%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
777 Super Big BuildUp Deluxe features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
777 Super Big BuildUp Deluxe by Crazy Tooth Studio is a solid offering that delivers good entertainment value. The 95.59% RTP combined with medium high volatility creates a well-balanced gaming experience.