Power Vault Demo (Push Gaming) Slot Demo & Review

More providers are seemingly creating these collection-based games whereby coin symbols land in view and are collected at the top of the reels. Randomly, where one is collected, it can trigger the main bonus of the game, where the bigger prizes are supposedly won. I'm not sure what I'm missing with these games, but I can't take to them or see any kind of appeal whatsoever. Granted, Power Vault allows you to collect the cash symbols in the base game, too, but unless you get super lucky and hit several of the fixed jackpots in the bonus, how on earth do you ever win anything good in these games?