Tutan Kha-boom Slot Review

Thunderkick released Tutan Kha-boom in March 2026, and it's another entry into the very crowded cartoon Egyptian genre. But instead of the usual mechanics, it uses a quirky bottom-up connecting ways system. I've played it, and the main draw here is the free spins round, specifically, how it builds a "multiplier floor" that reminded me a lot of Temple of Akhet.

The base game is decent enough: you have 99 connecting ways that read from the bottom row up. When you get a win, the symbols explode, new ones drop in, and consecutive drops double your multiplier.

But the real action is in the bonus. You can trigger 10 free spins organically with three scatters, or buy in directly for 80x your bet. There are also four BET+ modes, where the price of every spin goes up to raise your trigger chances: Bonus Boost at 2x your stake for 4 times the chance, Bonus Boost Plus at 3x for 8 times, Bonus Boost Ultra at 5x for 16 times and Bonus Boost Extreme at 9x for 32 times. Using these pushes the RTP from the base 94.17% up to a max of 94.50%, which is a bit on the lower side for modern slots.

Inside the bonus, your whole goal is to collect Exploding Wilds. Every three wilds you collect removes the lowest multiplier from the ladder and gives you an extra spin. If you manage to collect 15 wilds, the x64 step at the top of the ladder unlocks. Between spins, your multiplier resets, but it only drops down to whatever "floor" you've unlocked. Basically, if you get your wilds early, the second half of your bonus is incredibly lucrative because every single cascade starts with a high multiplier.

To see how this worked in practice, I bought the Bonus Game for 80x. It started out pretty rough. The first half of my spins only paid back about 16x, and I was getting a bit worried. But the wild collection was quietly doing its job in the background.

By the time I hit that 15th wild, my minimum multiplier was permanently stuck at x32. Those last few spins were crazy, one single spin paid out nearly 200x, and I walked away with a 491x total win. It was a great result (about 6x my buy-in), but it also made it glaringly obvious how much of the round sits on its last few spins. If the wilds don't come early to strip away the low multipliers, the bonus can stay as small as my first ten spins were. The math heavily relies on surviving until the end.

Several reviewers set this beside Thunderkick's Esqueleto Explosivo games because of the exploding avalanche they share, but Tutan Kha-boom stands on its own.

It's actually much closer to Temple of Akhet, which also uses that permanent multiplier floor mechanic. Tutan Kha-boom feels like a smaller Akhet: it has a lower max win (5,000x compared to 10,000x) and a cheaper buy (80x for the Bonus Game vs. 100x), while swapping a scatter-pays grid for the bottom-up ways.

You could also compare it to Serpentico Smash, another 5,000x max win Thunderkick game with a similar RTP and a slightly cheaper 75x buy. But Serpentico builds a global multiplier from crushed tiles, whereas Tutan doubles the multiplier per drop.

Tutan Kha-boom is a solid slot, rated medium volatility by the studio itself. The bottom-up avalanche is a fun twist, but make no mistake: this game is entirely dependent on that wild collection feature. If you like games that build up to a massive climax on the final few spins, it's definitely worth a look. Just keep an eye on your bankroll, because if the wilds don't land, those early spins can be thin.