Big Bang Bonus Hold & Win Free Demo Play at Casino UniBet UK
Space plots remain popular among UK slot fans who value cosmic adventures with big win potential. The Big Bang Bonus: Hold & Win slot brings explosive action to Casino UniBet. This title combines classic Hold & Win mechanics with space exploration elements. Kalamba Games launched this space-themed title in March 2023. The game takes place across a 5×3 grid with 25 fixed paylines. Its cosmic setting features planets and stars floating in deep space. The Hold & Win bonus round serves as the main attraction here. Players collect special orbs that stick to the reels during bonus spins. Each orb displays a cash value or jackpot prize. The respins continue as long as new orbs land on the grid.
Game Overview
The title operates on a standard video slot framework with some special additions. Base game spins can trigger random modifiers at any moment. These modifiers add extra wilds or multiply wins up to 10x. The scatter icon appears on reels one and three and five only.
Landing three scatters starts the Hold & Win bonus round. This feature begins with three respins on a special grid. Every orb that lands resets the counter back to three spins. The round continues until spins run out or all positions fill with orbs.
Symbols and Values
| Symbol | 3 on Payline | 4 on Payline | 5 on Payline |
| Wild Star | – | – | 500x |
| Red Planet | 100x | 250x | 400x |
| Blue Planet | 80x | 200x | 300x |
| Green Planet | 60x | 150x | 250x |
| Purple Crystal | 40x | 100x | 200x |
| Orange Crystal | 30x | 80x | 150x |
| Ace | 20x | 50x | 100x |
| King | 15x | 40x | 80x |
| Queen | 10x | 30x | 60x |
| Jack | 5x | 20x | 40x |
Extra Round Details
Special collector orbs gather all visible values on screen. Multiplier orbs boost nearby prizes by 2x or 3x. The maximum win reaches 5000x stake when combining jackpots and multipliers. The Hold & Win feature offers several prize types:
- Cash orbs show values between 1x and 50x bet
- Mini jackpot pays 25x total stake
- Minor jackpot awards 50x stake
- Major jackpot gives 250x stake
- Grand jackpot delivers 2500x stake
Betting Choices and RTP
UK gamblers at casino Unibet can adjust stakes from 20p to £100 per spin. The return to player sits at 96.14% in standard mode. High volatility means wins come less often but pay more when they hit. The hit frequency stands at 28.5% for base game wins. Autoplay settings allow up to 100 automatic spins. Loss limits and single win limits help control spending. The turbo mode speeds up reel animations for faster sessions. Mobile users enjoy the same features on phones and tablets. The HTML5 design works smoothly on iOS and Android devices. Portrait mode and landscape mode both display clearly on smaller screens.