Two UFOs landed together in Space Gems Rockblocks, lighting up a combined x15 multiplier beside the reels and setting it up to boost whatever the tumbles paid. It was the liveliest moment we saw from ordinary spins, with the bright space backdrop and upbeat soundtrack helping the base game feel easygoing between wins. There is no bonus round beyond the reels, just the optional gamble wheel, which lets you put your latest win back in play for a chance to multiply it.
Winning combinations here are groups of 5 or more identical symbols connected along their edges anywhere on the reels. Corners do not count. The paytable runs on group size rather than lines, stepping up at 7, 9, 12, 15 and 20 symbols, and the jumps at the top are steep. A block of 9 sunburst gems pays £5.00 at a £1 bet, while 20 of them pay £250.00.
A win triggers Rockfall, the game’s tumble feature, while any UFO landing forces a tumble whether the spin wins or not. Winning blocks clear, new symbols drop into the gaps, and if the refill forms another winning block, the sequence continues. In this way, a single spin can pay in waves, with each burst feeding into one running win total.
UFOs land carrying their own random multipliers, and the game does not spend them one at a time. Every multiplier on screen is combined into a single one, applied to the winnings of the entire Rockfall series once it ends. Pick up say a x2 early and an x4 a couple of tumbles later, and the resultant win pays out at x6.
There is a catch, though. A winless rockfall lets the accumulation expire, taking each multiplier with it.
The astronaut is the game’s other special symbol. Land 5 or more in view at once, and a brief burst of fireworks appears before the game reveals coin symbols, each printed with its own cash value. These are added together and folded into that spin’s win. The coins are the one part of a spin that can pay with no block on the reels.
The offer appears after any winning spin, with the gem beside the spin button glowing yellow. Accept it, and the reels switch to a wheel with x2, x3, x4 and x5 multiplier wedges, grey losing wedges, and triangles that move you up to the next wheel level, where the rewards can climb higher.
Land on a multiplier, and the win grows by the figure shown before you choose again. Hit a grey wedge, and the win is lost.
After each spin, you can collect the current win or gamble again. Lose, and you leave the round empty-handed.
The most the wheel can build is x750 of the total bet, and any win that would pass the game’s maximum is trimmed to that cap.
A big purple circle at the foot of the reels does the spinning, with a rabbit toggle next to it for quick spins and an autoplay that will stop on wins or on a balance shift of 10% to 100% either way. The reels themselves are 6 columns of 6 positions, and there are no paylines to remember, since wins come from touching blocks of matching gems.
Stakes run in 8 fixed steps, £0.20 at the floor and £50 at the top, and the demo covers all 8 in free play.
Each spin takes the chosen bet and lays out a fresh set of symbols. From there the game plays itself out. Blocks pay, the Rockfall clears and refills, UFO multipliers gather over the top, and the wheel offer arrives whenever the spin comes out ahead. It is a cluster pays game at heart, so the reading is spatial, and the quick-spin toggle helps, because the tumbles take their time.
Although there are 8 paying gem symbols, the blue and purple gems share the same pay scale, so the table really has 7 distinct payout tiers.
| Symbol | 5-6 | 7-8 | 9-11 | 12-14 | 15-19 | 20-36 |
|---|---|---|---|---|---|---|
| Sunburst gem | £2.00 | £3.75 | £5.00 | £25.00 | £125.00 | £250.00 |
| Pink star ring | £1.00 | £2.75 | £4.00 | £15.00 | £37.50 | £75.00 |
| Gold star ring | £0.80 | £1.75 | £3.00 | £6.25 | £12.50 | £25.00 |
| Pink gem | £0.50 | £1.25 | £2.00 | £4.50 | £7.50 | £15.00 |
| Orange gem | £0.40 | £0.50 | £0.75 | £1.25 | £3.00 | £6.25 |
| Green gem | £0.20 | £0.35 | £0.50 | £0.75 | £2.50 | £5.00 |
| Blue gem | £0.10 | £0.20 | £0.30 | £0.60 | £1.50 | £3.75 |
| Purple gem | £0.10 | £0.20 | £0.30 | £0.60 | £1.50 | £3.75 |
Every figure above reflects a £1 bet, and the table rescales with the stake.
Space Gems Rockblocks will suit players who want an easygoing, low-volatility 6x6 slot with steady tumbles, light special-symbol boosts, and one optional gamble feature that gives you a chance to multiply your winnings. It is not built for bonus-heavy drama, but for simple base game play with a small gamble on the side when you fancy it.
This is an easy game to sit with at the bottom of its stake range. Three features stack over the standard spins, tumbles that keep a win moving, shared multipliers hanging over the full series, and coin drops that arrive unannounced.
What this game lacks is a destination. There are no free spins to shift the game into a separate mode, so even when the UFO, Astromantis and other features get involved, the underlying round plays much the same way from start to finish. The one real change of pace is the wheel, which can hand a prior win back as nothing.
We ran the demo at £1 a spin for this review, and the wheel shaped most of the session. Wins mostly stayed low, with the gold gem lighting up after each one and the wheel sitting one click away. A £1.50 win was gambled and came back as £0.00 when the pointer landed on a miss segment. Two others worked out better: £2.40 doubled to £4.80 on a x2, while £5.70 tripled to £17.10 on a x3.
Between wheel spins, the reels played as expected. Wins typically landed between £0.10 and £2.40 a spin, with UFOs appearing frequently to add multipliers and tumbles, plus the astronauts chipped in more than once. One hit added four £0.10 coins alongside a £0.75 prize, while earlier lone coins showed £3 and £10 values.
The backdrop sells the space theme properly. The reels sit on pink and teal alien terrain, crystal spires and coral growths in the foreground, ringed planets and a cratered moon overhead, and small islands floating off to one side. Symbols are drawn big and glossy, the astronaut helmet and UFO readable at a glance, and a ticker above the reels rolls the basics past one line at a time.
The stats agree with the temperament. This is a Low volatility game with a 94.9% RTP. Our balance drifted instead of jumping. A profile this flat suits long, cheap play far more than the £50 top step, which reads as decoration. Anyone playing for one big result is holding the wrong game.
