How to Play

Once you’ve finished basking in the glory of the opening video, select your stake using the Plus and Minus symbols beneath the board, then tap your finger (or click your mouse) over the blue fingerprint scanner to set the reels rocking. You can set up to 99 automatic spins with the Autoplay feature, or turn on the Turbo Mode if you’re the type who likes to cut through the red tape and crack the case as fast as possible. Like in most online slots, wins are unlocked by matching symbols along the game’s 50 paylines from left to right. You’ll need three of the Tools symbols in a row to win, or just two of the stacked Character symbols.


CSI: Crime Scene Investigation’s symbols come in three groups: Characters, Tools, and Specials. All of the symbols are depicted in a sleek modern style that sets the game apart from more traditionally themed crime-fighting slots like Sherlock of London. The Character symbols are the highest paying and can stack to fill entire reels. Shift Supervisor Jim Brass is the highest paying symbol of all and can reward you with up to 100x your stake for 5 in a row. The Tools symbols represent a CSI’s essential equipment, including Gun, Magnifying Glass, Bullets, Petri Dish, Test Tube and Torch symbols. These are lower paying than the Character symbols, but can still reward you with up to 15x your stake for 5 Guns in a row. Finally, the two Special symbols are the Wild Crime Scene Tape symbol and the golden Badge Scatter. The Tape symbol will substitute for all symbols except the Scatters, which unlock CSI’s bonus rounds.


CSI has two main bonus games and the Mega Stacks Bonus, which can trigger during both the base game and the Free Spins round.

Bonus Name Bonus Explanation
Crime Scene Bonus Game

Land the Bonus Game Scatter along with two other Scatters to trigger the Crime Scene Bonus Game.

  • Investigate a crime scene by picking from ten marked items.
  • You start with four picks.
  • Each pick will reveal a cash prize and can also either reveal a piece of evidence or an extra pick.

Collect four pieces of evidence to solve the case and double your win.

Case File Free Spins

Land the Free Games Scatter along with two other Scatters to trigger the Case File Free Spins.

  • Pick one of six case files to reveal a character and a tool.
  • During Case File Free Spins, the reels are filled with only the selected Character and Tool.
  • You get eight Free Spins to start, but Free Spins can be retriggered indefinitely.
Mega Stacks Bonus

If you fill the entire game board with a single Character’s symbols, you earn an additional bonus prize of up to 100x your stake.

About the Author


The King

"The King" is a collective pseudonym representing the work of various former contributors to our site, who have since moved on but left behind a legacy of well-crafted online casino reviews. Our dedicated team of current writers has thoroughly fact-checked and verified the content to maintain its accuracy and relevance. While we gradually replace these reviews, we acknowledge and appreciate the valuable insights shared by "The King" and strive to uphold their high standards for our readers.

Reviewer since November, 2014

CSI: Crime Scene Investigation Details

👨‍💻 Developer
📅 Released
✅ Paylines
🎰 Reels
🔽 Min Bet
🔼 Max Bet
🏆 Jackpot
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