Keep Em Cool is a tropical, fruit slot game that offers a delightful blend of amusing visuals and fascinating gameplay mechanics. With Hacksaw's novel Cascading mechanic innovation, the game takes an extraordinary turn in how the symbols are played. Below are the critical features and mechanics:

Symbol States:

- Each pay symbol can have three states: not frozen, half-frozen, or fully frozen.
- Only unfrozen symbols are removed from the grid if part of a win.
- Every unfrozen symbol is eliminated, regardless of their participation in the winning combination.
- Half or fully frozen symbols descend to the lowest possible positions to be part of the subsequent cascades.
- Frozen symbols become half-frozen after a cascade, and half-frozen symbols turn unfrozen.

Cascading Mechanic:

- Following the elimination and drop of frozen and half-frozen symbols, this mechanic fills the gaps by dropping a new batch of symbols.
- The cascade continues as long as there are winning clusters.
- In the absence of a winning cluster, the game resets with a new paid cascade.

Modifier Symbols:

- Cocktail Glass Symbol: When activated, all winning symbols transform into fully frozen symbols. Each cocktail glass comes with a number showing how many more times the symbol can freeze a win (up to five times) before being removed.
- Blender Symbol: This symbol randomly chooses one type of symbol and removes it entirely from the grid, subsequently triggering the cascading mechanic. The blender starts with a count of two and increases by one per absorbed symbol. A payout equivalent to the number of symbols absorbed is given.

Sunset Picnic Bonus Round:

- To activate this round, you need to have 3 Picnic Basket Scatters in view.
- Each basket reveals a number between 3 and 5. The sum total of these numbers equals your total free spins.
- The bonus round features more frequent appearances of Blender and Cocktail Glass symbols
- Landing a Picnic Basket Scatter during the bonus round adds between 2 to 5 extra free spins.

Bonus Buy:

- The Bonus Buy menu (not available in some jurisdictions) offers two features:
- BonusHunt FeatureSpins feature: For a price of 3x your regular stake, it increases your likelihood of triggering the bonus round fivefold. This comes with a top-tier RTP of 96.25%.
- Sunset Picnic Bonus Round: Buyable for 100x the stake, this bonus round comes with a top-tier RTP of 96.22%.

In a nutshell, Keep Em Cool encapsulates numerous ways to win with its variety of modifiers, mechanics, and bonus rounds, offering a lighthearted yet rewarding gaming experience.