Mega Joker Slot Review

Mega Joker Overview

Welcome to our Mega Joker review — NetEnt's industry-leading 99.00% RTP classic slot, one of the very highest-returning slots on the Irish market. Mega Joker is a fruit-machine-style 5-reel, 5-payline game with a supermeter feature that tilts the maths further in the player's favour when activated.

The hook is the dual-reel structure: a standard base game on the lower section and a "supermeter" on the upper section, activated when you win in base. When the supermeter is active, wins accumulate and the game is paying at the full 99% RTP — the highest published figure on any NetEnt slot.

Verdict: the RTP ceiling makes Mega Joker the most economically efficient choice for long sessions on a modest bankroll. The visual language is pure 1970s one-armed-bandit, so expectations of spectacle are low — the value is in the maths, not the polish. Paired against lower-RTP flash slots in our Mega Moolah vs Mega Joker comparison.

RTP, Volatility & Max Win

Mega Joker's 99.00% RTP is the headline — effectively the best published payback on any widely-available slot in Ireland. That applies when the supermeter is active; base-game-only RTP is lower (approximately 76% on base if you never risk the supermeter bankroll). The practical application: always roll your base wins up into the supermeter to capture the full maths.

The RTP edge over industry average compounds meaningfully over long sessions. At 99% vs a typical 96%, you save roughly €3 per €100 wagered — over 5,000 spins at €1 that's €150 in expected value. For an explanation of how RTP interacts with volatility, our RTP guide breaks it down.

Theme, Design & Symbols

Mega Joker is an unapologetically retro fruit machine: three rows of cherries, lemons, bells, BARs, 7s, and the joker symbol that gives the game its name. The reel frame is steel and red neon; the soundtrack is chirpy arcade bleeps. It photographs badly in marketing but plays cleanly — NetEnt has never remastered it.

The supermeter reel section uses the same symbol set but pays at different multipliers. A 7 on the supermeter can award up to 2,000x stake; the joker wild substitutes across both sections. It's a purist slot design.

Bonus Features & Free Spins

Supermeter Mode

After any win in base, you can elect to transfer your winnings to the supermeter upper-reel section, where payouts use a higher multiplier ladder. Continue until a losing spin ejects you, or cash out at any point. The supermeter is the mechanic that produces the 99% RTP.

Mystery Win

Any two matching symbols on the supermeter — whether or not they form a payline — trigger the Mystery Win, revealing a random multiplier prize.

Joker Wild

The joker symbol substitutes for all fruit symbols and triggers larger combinations in both base and supermeter modes.