A pleasant 667x on Dice Fusion - (COUGH COUGH, Reactoonz with a 95.2% RTP, which admittedly is likely better than you'll find the actual Reactoonz on these days, since the 96% PnGs are basically a relic of the past now) - this game has grown on me since its release and I'm pretty content to make it part of my normal 3Dice rotation despite my original rather harsh judgement of it.
New 3Dice slot - 'DICE FUSION', 3Dice does Reactoonz - Casinomeister Forum
Slightly interestingly, this was actually a basegame hit on the way towards the Gargantoon, with the eventual Gargantoon at the end of it all paying an awful lot less!
You can see it here, it's the maximum 300x pay on the next to top symbol, with the doubling 2x2 cube in there which boosts it to 600x.
The rest of the 667x was made up of the build-up reactions and the crappy Gargantoon itself.
The 6000 (£60) you can see here is doubled and pops up twice.
The great thing about this game is it will cheerfully burble along by itself whilst I'm sat on the couch playing videogames (currently the turn-based strategy game Midnight Suns), and when I get the Gargantoon it makes a really distinctive noise that means I can just glance over to my PC and see what the Gargantoon pays.
(Or in this case, I heard the klaxon sound that means it's landed a big win, so I knew to look over to see what it was.)
Since I Bandicam all my slots play anyway, I can always replay back anything I want to at will, so missing it 'happening live' as it were isn't a problem regardless.