Searches for online pokies are climbing fast, and a lot of that traffic is chasing Megaways titles. The mechanic looks like a gimmick until you understand what it does to your bankroll.
What Megaways actually changes
A standard five reel pokie locks in a fixed number of paylines, usually somewhere between 20 and 50. Megaways titles randomise the number of symbols on each reel every spin, which means the number of ways to win can swing from a few thousand up to over 100,000 on some titles. That volatility isn't decoration. More ways to win means more small hits, but the big wins cluster around cascading wins and multiplier trails rather than a single spin. You're not playing the same game with extra math bolted on, you're playing a different risk curve. Understanding that curve matters before you set a session budget, because a game that pays often in small amounts needs a different bankroll split than one that pays rarely but big.

Reading the paytable before you spin
The RTP number on a Megaways title tells you the long-run average, but it hides the shape of the distribution. Two pokies can both sit at 96% RTP and play completely differently. Check the max win multiplier listed in the info screen, usually somewhere between 5,000x and 50,000x your stake. That number tells you whether the game is built for grinding steady returns or chasing a rare huge hit. Also check the hit frequency if it's listed. A lower hit frequency with a high max win means longer dry spells between payouts, which changes how much you should stake per spin relative to your total session bankroll.

Where to actually try them
LuckyGem and Drakaris both carry decent Megaways libraries if you want to compare titles side by side without hunting across ten tabs. Demo mode is worth using first, since it lets you see the volatility pattern over 50 to 100 spins before any real money is on the table. Once you've picked a title that matches your risk appetite, move to real stakes with a bet size that's a small fraction of your session bankroll, not a fixed habit carried over from fixed-payline games.
Before you load a new Megaways title, spend ten minutes in demo mode checking the max win multiplier and hit pattern, then size your real money bets to match what you saw, not what the last game trained you to expect.