Space Wars is NetEnt's take on a cartoon alien battler, released in April 2013 with a 5-reel, 4-row grid, 40 paylines, and an RTP of 96.75%. The volatility sits at a moderate 5.2 out of 10.
What separates Space Wars from a standard 40-payline slot is the Cloning Pod re-spin system. Every single win triggers a free re-spin where the winning symbol is cloned and redistributed across the reels. There are no free spins, no bonus rounds, no pick-and-click games - just the Cloning Pod firing on every win. It's a single-mechanic slot, and the mechanic is good enough to carry the whole game. Below you'll find casinos offering Space Wars, followed by a detailed look at how everything works.
How It Plays
The grid runs five reels across four rows with 40 fixed paylines. Bets range from 0.40 to 200 per spin. The hit frequency is 16%, which is below average, but every hit triggers the Cloning Pod re-spin - so the actual action frequency is higher than that number suggests.
The alien characters serve as the high-value symbols, each representing a different species with distinct designs. Low-value symbols are coloured crystals. Every symbol in the game can appear stacked on the reels, which is critical to how the Cloning Pod functions. When symbols arrive in stacks and then get cloned, the re-spin can produce substantial coverage across the grid.
The maximum win is 1,000x your total stake. That's a modest ceiling for a 40-payline slot, but the medium volatility and guaranteed re-spin mechanic mean wins distribute more evenly across a session rather than concentrating in rare bonus rounds.
Cloning Pod Re-Spins
This is the entire feature set. Every time you land a winning combination, the Cloning Pod activates. The winning symbol type is captured, the reels spin again, and copies of that symbol are sent back onto the reels during the re-spin. The non-winning positions are cleared and respun while the game attempts to place more of the cloned symbol.
The result is a second spin with artificially increased odds of landing more of the symbol that just won. If the original win came from a stacked symbol covering several positions, the re-spin has even more cloned copies to work with, which can turn a small initial win into a much larger one.
Re-spins don't chain. You get one re-spin per win, regardless of whether the re-spin itself produces a win. This keeps the mechanic predictable - you always know you're getting exactly one extra chance to improve a winning spin.
Stacked Symbols
All symbols in Space Wars appear stacked on the reels during both the main game and re-spins. A stack can cover two, three, or all four positions on a reel. Stacked symbols are the fuel that makes the Cloning Pod effective.
When a high-value alien symbol lands stacked across three or four positions on a reel and triggers a win, the Cloning Pod captures that symbol and sends cloned copies onto the reels. Because all symbols can stack, the re-spin has a realistic chance of placing another full stack of the same symbol on an adjacent reel. Two full stacks of a high-value symbol across four rows on a 40-payline grid produces a significant payout.
The stacking is random, so results vary. Some spins will see low-value crystals stacked while the high-value aliens appear as singles. But when the stacking and the Cloning Pod align on a premium symbol, the game's 1,000x potential comes into reach.
Wild Substitution
Wilds appear exclusively on reels 2 and 4, substituting for every other symbol. Their restricted placement means they act as connectors between the outer reels rather than win generators in their own right. A stacked high-value symbol on reel 1, a wild on reel 2, and another stack on reel 3 creates a three-reel combination that the Cloning Pod can then extend further on the re-spin.
The reel 2 and 4 restriction is deliberate. Wilds on the edge reels would let them anchor wins independently. Placing them in the middle means they always need real symbol matches on at least one side, which keeps the game balanced at medium volatility.
RTP and Session Character
The 96.75% RTP is slightly above the industry average. With 5.2 out of 10 volatility and 16% hit frequency, Space Wars plays as a medium-variance game where wins arrive at a moderate pace but nearly always get a boost from the re-spin. The balance curve is smoother than high-volatility slots but less predictable than low-variance games.
The absence of a traditional free spins round means there's no single trigger that can dramatically shift a session. Your largest wins come from base game spins where stacked high-value symbols hit across multiple reels and the Cloning Pod extends the coverage further. This creates a session profile where the biggest payouts arrive without warning on what looks like a normal spin, rather than building behind a scatter trigger.
A One-Mechanic Slot Done Right
Space Wars doesn't try to do too much. There's no multi-level bonus, no gamble feature, no progressive jackpot. The Cloning Pod fires on every win, stacked symbols give it material to work with, and the 40-payline grid provides enough coverage to keep combinations forming. For a 2013 release, the cartoon art and alien battle animations still hold up visually. The game proves that a single well-designed mechanic can carry a slot more effectively than a dozen features bolted together without purpose.
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