Jackpot Raiders Slot by Yggdrasil Gaming

The Map collection in this one survives between sessions, which is the rare bit. Five reels, five Map types - Summit Shrine, Highland Gate, Jungle Ruins, Desert Tomb, Templar Grave - each one only appearing on its dedicated reel. Collect 5 of any single Map and the corresponding Jackpot Free Spins round triggers, opening with one gem of that reel's Jackpot already banked. Close the browser and reopen six months later and your tally is still there. New accounts get seeded with 2 Summit Shrine and 1 of each other type, so the Mountain trigger sits the closest to firing on the very first session.

The Compass Scatter is the conventional trigger. Three or more in base play opens the Compass screen, which forks into either 10 Jackpot Free Spins or the Treasure Hunt Bonus. Coin pays sit on top of that, with 4 Scatters adding 1,000 coins and 5 adding 10,000 on top of the feature itself. Two Scatters fire a different path entirely - a Pick & Click chest game where the prize pool covers 20/40/80 coin awards, 10 Jackpot Free Spins, the Treasure Hunt Bonus or one random Map dropped onto your collection meter. That last outcome is the one you want, because it nudges the persistent meter forward without needing the Scatter trio.

Jackpot Free Spins run on a x3 line multiplier with no Scatters, no Maps, just five coloured gems scattered across the reels and a target of 5 same-colour collected in the round to claim that local progressive. The Jackpots are operator-funded pools, five of them, one per gem colour. Sunken City Free Spins is the deeper tier - locked behind 5 Relics collected through Treasure Hunt rounds, paying x10 line multiplier for 10 spins, and starting with one gem already banked in EACH of the five Jackpot collections at once. Map-triggered Free Spins use the average coin value of the spins that contributed Maps, so spreading collection across high-stake sessions matters if you care about feature stake math.

The Treasure Hunt Bonus is a pick-game with a character choice up front. Sam takes higher prizes at higher risk, Bear takes lower prizes at lower risk - same structure, different distribution curves. Three attempts to cross a river and crack a chest, three escalating tiers, with Maps, Relics, coins and Jackpot Free Spins on the prize table. The two protagonists set the tone for the whole game, Sam in adventurer gear and Bear as the older bearded explorer in a fedora, with the reel cabinet sitting against a parchment treasure-map backdrop and a sun-warmed Indiana-Jones palette. No buy bonus - the only way in is to play the base game and let the persistent meters fill, which makes this a genuinely slow-burn release in a category that mostly sells instant access.