by ELK Studios
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Game features
ELK Studios
May 2018
Bet Size
€0.10 - 50
Max Win
Bonus Guarantee, Extra Wild, Free Spins, Random Wild, Respin, Retrigger, Stacked Symbols, Sticky Symbols, Sticky Wild, Walking Wild, Wild
3D, Party

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Bonus offers

Pros and cons
  • Medium volatility, ideal for all players
  • Randomly triggered bonus features
  • Sticky and walking wilds may trigger during bonus features
  • Long process of opening all bonuses
  • Lack of original bonus rounds

Birthday! Slot Review

365 days have already passed and it’s that time of the year again, the time to celebrate your birthday. Several of ELK Studios’ characters have gathered together to create the perfect surprise party just for you!

The background consists of a static image of a bar with a few characters from games such as Wild Toro and others provided by the same developer. On the right side of the scene, a doorbell is located above a bag filled with birthday presents.

For the most part, the mechanics are exactly the same as what you’re accustomed to. The reels start spinning altogether and come to stop individually in consecutive order all while a “Happy Birthday” tune kicks in now and then.

Over time this has become one of the most popular games of the developer simply because of all the fun and action-packed features it offers. Since many characters from other series play a part you can play pretty much any other game developed before the one in question if you want to experience something similar. For now, let’s focus on Birthday!

How to Play Birthday!

The game consists of 4 rows and 5 reels with 178 fixed paylines. The controls are found throughout the interface allowing you to change the bet size, set up the autoplay function, access the in-game menu, or simply spin!

Regarding the stakes, you can bet anywhere between $0.10 and $50 per spin. You can also use one of the 4 patented preset betting strategies. This makes things interesting and easier on you since the bet size doesn’t have to be manually changed rather than automatically based on the session’s results.

Birthday! is a high volatility title with a hit frequency of around 17% so you shouldn’t expect winnings very often. That said, the maximum exposure is 5,000x while the max win is $250,000. The game’s RTP is 96.3%.

Birthday! features 3 low paying and 3 high paying symbols. The first come in the form of green, blue, and red balloons followed by a couple of cocktails, a rose, and the logo of the game.

The game’s special symbols are:

  • Wilds – The wild is represented by the birthday cake symbol and substitutes for all regular symbols to form winning combinations. It can also be in the form of walking or sticky wilds.

Game Rules

Birthday! Features

The game is packed full of crazy and potentially highly rewarding features so without any delays, let’s check them out together!

Happy Spins Until

These are five different types of randomly triggered respins. Every time the doorbell rings, one of the different party guests is announced, bring his or her feature along. The five potential features are:

  • Camel Respin – Spins until a random number of wins between 3 and 5 are achieved Mr.
  • Lake Respin – Spins until the player gets a connecting winline over all 5 reels
  • Electric Sam – Sam first selects a random symbol. The reels spin and instances of the selected symbol are gathered until there are enough for a payout. The feature ends when no more instances of that symbol land.
  • Anne Bonny Respin – Spins until the player gets a win equal to or bigger than 20x the bet. All wins during the respins are collected and added to the total win.
  • Matador Respin – Matador first selects a random symbol. The reels spin until a win with the selected symbol lands. All wins during the respins are collected and added to the total win.
Free Spins

This is the second type of reward occurring from a guest. Maggie’s feature starts with 10 free spins. The feature can be retriggered during the free spins.


This is the third type of guest rewards. These are:

  • Walking Wild – Can be triggered at any time. 3 walking wilds are placed in random positions on the reel set. They will move one reel leftwards for every spin. The reels keep on respinning until no walking wilds remain.
  • Sticky Wild – Can be triggered during Happy Spins or Free Spins. 3 sticky wilds are placed in random positions on the reel set and remain there until the end of the feature.

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