Fire Siege Fortress™ Slot


Relive the war-prone middle ages as you take on the heavily fortified castle with fire spewing dragons, arrow snipers and powerful trebuchets on Netent’s latest slot creation Fire Siege Fortress™. Initially exclusive at casinos from the Betsson Group, it was released on 5th September 2019 and is bound to be rolled out network wide within the next three to six months. A highly unusual game window with 576 ways to win offers three wild reel modifiers and a free spins round for wins of up to 3,456x the initial stake.


Top 10 NetEnt Casinos

100% up to £100

100% Up to €300*

100 Free Spins*

100% Up to €500*


120 Wager-Free Spins*

100% up to €200*

100% up to €100

200 Free Spins

Bonus up to €300*

30 Wager-Free Spins*

100% up to €200*

50 Free Spins*

100% up to €100*

100 Free Spins on Starburst*

100% up to €50

100 Free Spins

100% Up to €50*

100% Up to €100*

100%, up to €100

300 Free Spins

100% Up to $/€ 333*

Wager-Free Bet*

50 Spins + 20 Coins*



100%, up to €100*

200 Free Spins*

100% up to €1000

200 Free Spins

100% up to €200

4,200 extra spins + 11 wager-free welcome spins

This casino is closed

Casino Rating Bonus Free spins Visit Casino
#1 Fun Casino 100% up to £100
#2 Prospect Hall 100% Up to €300* 100 Free Spins*
#3 Kerching! 100% Up to €500* 150
#4 Volt 120 Wager-Free Spins*
#5 Just Casino 100% up to €200*
#6 Voodoo Dreams 100% up to €100 200 Free Spins
#7 Casumo Bonus up to €300* 30 Wager-Free Spins*
#8 Vegas Hero 100% up to €200* 50 Free Spins*
#9 Pots Of Luck 100% up to €100* 100 Free Spins on Starburst*
#10 Cashmio 100% up to €50 100 Free Spins
#11 Casino Heroes 100% Up to €50*
#12 Dunder 100% Up to €100*
#13 Genesis Casino 100%, up to €100 300 Free Spins
#14 GoWild Casino 100% Up to $/€ 333*
#15 Highroller Wager-Free Bet* 50 Spins + 20 Coins*
#16 Leo Vegas - -
#17 Mr Green 100%, up to €100* 200 Free Spins*
#18 Spinit Casino 100% up to €1000 200 Free Spins
#19 Videoslots 100% up to €200 4,200 extra spins + 11 wager-free welcome spins
#20 Trada This casino is closed
View all

Fire Siege Fortress™ Slot

Rate this game
(1 votes, average: 1.00 out of 5)

Up to €300 + 30 Wager-Free Spins*

For all new players at Casumo

Slot Details

The fortress under siege serves as the backdrop of the reels with the fearless knight leading the attack standing on the left of the game window, ready to strike the reels with wild modifiers. Intricate pay symbols in artistic medieval style, cries from the dragon as well as sound effects of armor and weapons underline the authenticity of the theme. Fire Siege Fortress™ is a video slot with five reels, three to four rows and 576 ways to win, featuring Wild substitutions, three Wild reel modifiers and a bonus round with up to 18 Free Spins.



The TRTP of this medium to high variance slot is set at 96.01%, featuring a maximum win on a single spin of 3,456x the bet for full screen of the purple dragon symbol. Stake sizes range from 0.20 to 100 coins. Auto Spin will allow players to set up to 1,000 consecutive spins with a range of options as to when the run should stop. The game is in HTML5 format, making it available for play on any desktop, mobile and tablet device across all OS platforms.

The slot has 10 pay symbols which all can appear in stacks of up to two symbols high. At the low end, they are 10s to As in medieval-style characters. The premium symbol are a hammer, a war axe, a sword, a knight in full armor and a dragon. Wins for a 5OAK range from 1x to 6x the stake. Wild symbols are a gold-ornamented tile with the character “W”. Scatters are an equally gold-ornamented tile with a crown.

Read more

The Wild Windows

Fire Siege Fortress™ has three windows at the bottom of reels two, three, and four. They light up on every spin in the base game and Free Spins and will activate one to three reel modifiers if a Wild symbol lands in one or more windows.

  • Wild on reel window two – Archer Attack: Two archer snipers appear from the right and shoot arrows at random positions on the reels, except where a scatter or a wild is present. One to three reel positions will turn wild.
  • Wild on reel window three – Dragon’s Breath: A fire-spewing dragon appears from the right and lights up reel three, transforming it into a Wild Reel.
  • Wild on reel window four – Trebuchet Assault: A powerful trebuchet will be reeled in from the right, which fires then one or two balls onto random reel positions. The hit positions will turn Wild and the symbol expands one space down to create Giant Wild.

All three Wild modifiers can be triggered in one spin, which would be the exact moment where the maximum win on a single spin for this slot can be hit. It would need a wild symbol landing on all reels in a spin, amounting to a total of five Wilds. If the middle ones each hit the Wild Window and then award the maximum possible extra Wilds, then it would add another eight Wild symbols on to the reels. Three from the Archer Attack, three from the Dragon’s Breath and two from the Trebuchet Assault. Added to the five initial Wilds from the spin, this would lead to a total of 13 Wild symbols spread over the 18 reel positions. Together with premium symbols in the remaining five positions would award the maximum win of 3,456x the bet, equal to 576 times 5OAK dragon symbols, each paying 6x the bet.

When Dragon’s Breath and Trebuchet Assault are activated at the same time, only one Giant Wild will appear on the reels. Wins are evaluated and paid after all modifiers have been applied.



Read more

Fire Siege Free Spins

Crown Scatters on reel one, two, and three in one spin will trigger the Fire Siege Free Spins. Scatters landing in the main game window will award three free spins each, while those landing at the top of reels one, three or five will award six Free Spins each. The maximum amount of Free Spins in a round is 18. The feature cannot be re-triggered. Wild Windows will be active throughout the bonus round but there are no other extras such as multipliers or sticky wilds.

Tower Second Chance – On any spin, when only two scatters land on the reels with at least one in the tower on reel one, three or five, the game will award a second chance to trigger the Fire Siege Free Spins. The possible outcomes are a Tower Coin Win of 5x the total stake or three Fire Siege Free Spins.



Read more

Our Verdict

To the arms or stay at home? We opt to get into our armored suite and join the fearless knight on his quest to conquer the castle. Fire Siege Fortress is very entertaining and on top has a rather high win potential of up to 3,456x the stake, pushing the slot towards high volatility. The Wild Windows are an interesting new pay mechanic. Wilds land often enough at the bottom of the designated reels to give us a win boost with the added Wild symbols. The reel layout with varying rows and 576 ways-to-win is a novelty from Netent and is admittedly something that we liked. Will you join the siege? Spin the reels on Fire Siege Fortress now to find out.

Read more