by ELK StudiosReleased Jul 5, 2022
Walking snake clusters eat symbols and grow on a hexagonal grid. Crossings create multiplicative multipliers. 4-level progression, no traditional bonus, 25,000x.

Game Type
RTP
95%
Volatility
Medium
Max Win
25,000x
Grid
7x7 (hexagonal)
Reels
7
Rows
7
Paylines
Cluster Pays (5+ connected symbols)
Min Bet
$0.2
Max Bet
$100
Hit Freq
38.9%

Coba drops you into a hexagonal grid shaped like an ancient Mayan temple, and honestly, it's one of the more creative slot designs you'll come across. The 7-row hex layout with 6-7 columns feels genuinely different from standard reels. Cluster pays kick in at 5+ connected symbols, and with a hit frequency of 38.9%, you're getting wins on roughly 4 out of every 10 spins. That's solid. The max win sits at 25,000x your bet, and bets range from 0.20 to 100.00 EUR.
The RTP is 95.0%, which, let's be honest, is on the lower end. You'll feel that over longer sessions. But the volatility model here relies heavily on the snake mechanic to deliver the bigger payouts, so the base game keeps you ticking along while you build toward the real action.
This is where Coba gets interesting. Snakes are essentially walking clusters that move across the hexagonal grid. When a snake enters, its head picks up the first symbol it touches, and then every symbol it passes over transforms into that same type. Minimum length is 5 symbols, so every snake is already a guaranteed win cluster the moment it appears.
Here's the catch, though. Snakes need to eat. If a snake moves over a matching symbol during its turn, it eats it, grows longer, gets an extra move, and enters survival state (yellow tail). If it doesn't eat anything? It dies. Gone. Removed from the grid. So you're watching these snakes slither around hoping they bump into the right color. It's surprisingly tense for a slot mechanic.
And then there's snake crossing. When two snakes cross paths, they create a Multiplier Wild at the intersection point starting at x2. Additional crossings at the same spot double it - x4, x8, and so on. Multiple Multiplier Wilds in one cluster? They multiply each other. Two x2 multipliers in the same cluster means x4, not x4 additive. That's where the 25,000x potential lives.
Every winning symbol feeds into a progress meter with 4 levels. Think of it as climbing the temple. Each level releases snakes onto the grid:
There's no traditional free spins round here. Level 4 with 6 snakes IS the bonus. Six snakes weaving around a hex grid, eating symbols, crossing each other, stacking multipliers. It can get chaotic in the best possible way. But reaching Level 4 organically? Don't hold your breath. The meter fills slowly in base game, and I'd say most sessions you'll hover around Levels 1-2 unless you buy in.
ELK's X-iter system gives you five options to speed things up:
All X-iter options run at the same 95.0% RTP as the base game. The 500x option is obviously the whale play, but the 10x and 25x tiers feel like the sweet spot for most budgets.
The top symbol pays 50,000 coins for a 15-symbol cluster (500x bet), and the Wild matches that. Second-highest goes up to 25,000 coins (250x) at max cluster, while Symbol 2 reaches 15,000 (150x). Low symbols top out between 400-500 coins for full clusters, which isn't exciting but they connect frequently enough to feed the meter.
Coba is a genuinely unique slot. The hex grid, avalanche drops, and snake mechanics create something that doesn't really play like anything else. I think the 95.0% RTP is its biggest weakness - you're paying a premium for the novelty. But if you want a slot that actually surprises you with its mechanics rather than just reshuffling the same free spins formula, Coba delivers. Just manage your bankroll accordingly, because those snakes can be stubborn about eating the right symbols.