My thoughts
Lumped a few hundred spins through this slot and I'm a bit 'meh' about it.
Thanks to Rival's incredibly mean decision to disallow autoplay with free money I refuse to manually press the SPIN button any more than I have done, so these are more my impressions than a deeply considered review.
(On a tangent, why disallow autoplay with free money? It doesn't motivate me to deposit, it just annoys me with its pettiness, denies me the chance to get well acclimatised to a slot before I play with real money, and leaves me feeling like I just want to go and play some other software, somewhere else.)
Anyway, back to Astral Luck..
Base game - 50 lines with expanding wilds on 1/3/5, most pays are pretty low, only the jackpot symbol is really capable of making any big wins. Without that I'd be surprised to ever see over 100x stake on the base game. (Standard issue Rival in that regard, which is no bad thing as video slots should weight the pays towards the bonus rounds IMO.)
Graphics and sound - Perfectly nice, but continues with Rival's noble tradition of having a seemingly random selection of symbols relating to the various wins and bonus rounds. Even after three free spins rounds I didn't realise the symbols had dropped in until the round started. Plus the bonus round symbol looks quite similar to one of the basic win symbols - bonus/free spin symbols should be DISTINCTIVE!
Free spins bonus - Five spins at three times pay, could get interesting with the expanding wilds and like all Rival slots, the multiplier will carry over into the bonus round if triggered within free spins, which could make for some big pays.
Bonus round - Three spins of a 'double wheel', going off the available values it looks like it should be a pretty consistent 50-100x stake, which if triggered in free spins would make a tasty 150-300x stake. However, to compensate for this the round will most likely be pretty rare, I only saw it once in 300 spins.
RTP - Is listed as 'about 94', but remember that Rival list the RTP of WinMill as 'about 95' and according to the tech sheet the actual RTP for that game is 94.2%, so Astral Luck may well have a T-RTP of 93.2% and they've just rounded it up to 'about 94'. Maybe Tropica can confirm?
Either way that's on the low side for my taste, anything below 95% RTP is too low for a video slot IMO.
Overall - This isn't a slot that's going to get me depositing at a Rival any time soon. And I'm still annoyed with them for buggering around with The Back Nine. (The help file for that changed from 'about 99' to 'about 95'......)