777 High and Mighty Wonder 500 Slot by Light & Wonder

The base reels run a tight 5x5 of cherries, oranges, watermelons, grapes, golden bells, jewelled crowns and card-suit pips against a violet-and-flame backdrop, with chunky red 777 wilds dropping in as the headline icon. What makes it tick is the Mighty Reels trigger: land a 3-high stacked 7WILD anywhere fully in view and the cabinet above the playfield lights up, opens a second 5x5 grid stacked on top of the first, fills those upper rows with wilds and pushes the active paylines from the standard count straight up to 100. The whole 5x10 stays live for that spin only, then collapses back on the next press.

Three, four or five BONUS scatters award 8, 12 or 20 free spins, and the round retriggers on further scatter hits. One quirk worth flagging: the free spin round itself starts without Mighty Reels active, even if the triggering spin had the upper grid open. You earn the expansion fresh inside the bonus by landing a new 7WILD stack, which makes the round feel less guaranteed than the trigger animation suggests.

The Wonder 500 badge on the corner isn't a tiered jackpot ladder, despite how it reads. There's just a single 500x stake cap on the whole game, and the Wonder 500 branding means Light & Wonder has tuned this variant for boosted feature frequency and shorter odds on hitting that 500x ceiling. No mini, minor, major pot structure - one number, harder to reach but reached more often than on plain versions of the cabinet.

The Premium Play menu is where things get genuinely unusual. At 200x bet you pick from four tiers, each running five spins through a different ruleset: SUPER keeps a 7WILD stack locked in view with Mighty Reels firing every spin (96.07%); MEGA does the same and strips the low-paying suit symbols out of the reel strips entirely (96.03%); ULTRA combines both and locks the upper grid permanently open until a win lands, which posts the highest published RTP of the lot at 96.20%; LUCKY DIP rolls one of the three at random and sits at 96.10%. Confirmation runs through a small 3-reel side panel - match three gems of the same colour and the chosen tier kicks off. ULTRA being the top-RTP option rather than the most expensive one is a rare bit of menu design from a provider that usually puts its best math behind the highest price tag.

Pure fruit-machine iconography wrapped in a modern fire-and-purple cabinet, with the bonus structure doing nearly all the heavy lifting.