Castle Builder Slot: Best Casinos, Free Play, Review
| Released | June 10, 2014 | |
| Slot Studio | Rabcat | |
| RTP | 96.47% | |
| Volatility | Medium-low |
| Theme | Medieval | |
| Reels | 5 | |
| Rows | 3 | |
| Paylines | 15 |
| Bonus Game | Yes | |
| Free Spins | Yes | |
| Wild | Yes | |
| Scatter | Yes |
| Multipliers | No | |
| Top Win | x1,000 | |
| Bet Size | 0.10-50 USD/EUR | |
| Hit Freq. | N/A |
Castle Builder - RTP Analyzer
RTP - 96.47%
Castle Builder - Volatility and Required Bankroll Analyzer
Medium-low Volatility
Expect rather frequent winnings though they won't impress most players. Relatively small bankroll required for this type of slots is the main advantage. Great choice for those who seek steady gameplay without huge swings.
Required Bankroll* (based on our experience)
Aggressive
≈
75 bets
Normal
≈
150 bets
Conservative
≈
300 bets
*Number of bets we recommend for this slot depending on your play style
Castle Builder - Features Analyzer
Castle Builder offers 5 out of 32 most popular online slot features
Autoplay
Bonus Game
Free Spins
Wild
Scatter
Multipliers
In-Game Jackpot
Progressive Jackpot
Buy Bonus
Megaways
Gamble Feature
Cascading Reels
Colossal Symbols
Adjustable Paylines
Pays Both Ways
Respin
Expanding Reels
Expanding Wilds
Expanding Symbols
Sticky Wilds
Random Wilds
Multiplier Wild
Walking Wilds
Multiplier Free Spins
Increasing Multipliers
Infinity Reels
Nudging Reels
Cluster Pays
Scatter Pays
Mystery Symbol
Hold Feature
Split Symbols
Castle Builder In Comparison With Other Slots
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Castle Builder
|
|
|
|
|---|---|---|---|
| Producer | Rabcat | Playson | RedTiger |
| RTP | 96.47% | 95.6% | 96.16% |
| Volatility | Medium-low | High | Medium |
| Max Win | x1,000 | x14,100 | x1,010 |
| Released Year | 2014 | 2024 | 2016 |
| Paylines | 15 | 25 | 20 |
| Free Spins | 10 | ||
| Buy Free Spins | |||
| Multipliers | x2-10 | x2-5 | |
| Wild Symbol | |||
| Scatter | |||
| Other Features |
Autoplay, Bonus Game |
Autoplay, Respin, Expanding Wild, Multiplier Wild |
Autoplay, Multiplier Wild |
Comparison Table of All Rabcat Slots (27)
| # Slot Name | RTP % | Volatility | Max Win | Play For Free |
|---|---|---|---|---|
| 1. Castle Builder II | 97.75 % | Medium | x2,000 | N/A |
| 2. Dragon's Myth | 96.6 % | Medium-low | N/A | N/A |
| 3. Forsaken Kingdom | 96.54 % | Medium | x2,500 | N/A |
| 4. Jester Wheel | 96.49 % | High | x2,146 | N/A |
| 5. Tropical Wilds | 96.47 % | Medium | x3,000 | N/A |
| 6. Frozen Diamonds | 96.47 % | Medium | x2,500 | N/A |
| 7. Castle Builder | 96.47 % | Medium-low | x1,000 | N/A |
| 8. Reel of Riches | 96.45 % | High | x2,400 | N/A |
| 9. Star Fever Link&Win | 96.24 % | High | x12,400 | N/A |
| 10. Nikola Tesla's Incr… | 96.22 % | Medium | x4,100 | N/A |
| 11. Anna Van Helsing Mo… | 96.18 % | Medium | x1,500 | N/A |
| 12. Gnome Wood | 96.16 % | Medium-high | x5,000 | N/A |
| 13. North Storm | 96.13 % | Medium | x2,500 | N/A |
| 14. Lion Strike | 96.13 % | Extreme | x14,580 | N/A |
| 15. Mining Fever | 96.13 % | Low | x500 | N/A |
This Page Was Last Updated: May 6, 2026